Home / 149,016,344,613.32-205,641,509,438.94-81,350,934,828.68

Finding the Fourth Proportional to 149,016,344,613.32, 205,641,509,438.94 and 81,350,934,828.68

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Solution

The fourth proportional to 149,016,344,613.32, 205,641,509,438.94 and 81,350,934,828.68 is: 112,263,718,962.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,016,344,613.32 : 205,641,509,438.94 = 81,350,934,828.68 : x
  2. Step 2: Convert to fraction form
    149,016,344,613.32/205,641,509,438.94 = 81,350,934,828.68/x
  3. Step 3: Cross multiply
    149,016,344,613.32x = 205,641,509,438.94 × 81,350,934,828.68
  4. Step 4: Simplify right side
    149,016,344,613.32x = 16,729,129,032,438,589,161,472
  5. Step 5: Solve for x
    x = 16,729,129,032,438,589,161,472/149,016,344,613.32
  6. Step 6: Final answer
    x = 112,263,718,962.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.