Home / 149,043.64-205,681.08-81,061.42

Finding the Fourth Proportional to 149,043.64, 205,681.08 and 81,061.42

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Solution

The fourth proportional to 149,043.64, 205,681.08 and 81,061.42 is: 111,865.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,043.64 : 205,681.08 = 81,061.42 : x
  2. Step 2: Convert to fraction form
    149,043.64/205,681.08 = 81,061.42/x
  3. Step 3: Cross multiply
    149,043.64x = 205,681.08 × 81,061.42
  4. Step 4: Simplify right side
    149,043.64x = 16,672,800,411.93
  5. Step 5: Solve for x
    x = 16,672,800,411.93/149,043.64
  6. Step 6: Final answer
    x = 111,865.23

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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.