Home / 138,064.26-190,535.40-77,653.92

Finding the Fourth Proportional to 138,064.26, 190,535.40 and 77,653.92

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Solution

The fourth proportional to 138,064.26, 190,535.40 and 77,653.92 is: 107,166.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,064.26 : 190,535.40 = 77,653.92 : x
  2. Step 2: Convert to fraction form
    138,064.26/190,535.40 = 77,653.92/x
  3. Step 3: Cross multiply
    138,064.26x = 190,535.40 × 77,653.92
  4. Step 4: Simplify right side
    138,064.26x = 14,795,820,708.77
  5. Step 5: Solve for x
    x = 14,795,820,708.77/138,064.26
  6. Step 6: Final answer
    x = 107,166.19

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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.