Home / 157,746.12-217,686.68-89,761.56

Finding the Fourth Proportional to 157,746.12, 217,686.68 and 89,761.56

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Solution

The fourth proportional to 157,746.12, 217,686.68 and 89,761.56 is: 123,869.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,746.12 : 217,686.68 = 89,761.56 : x
  2. Step 2: Convert to fraction form
    157,746.12/217,686.68 = 89,761.56/x
  3. Step 3: Cross multiply
    157,746.12x = 217,686.68 × 89,761.56
  4. Step 4: Simplify right side
    157,746.12x = 19,539,895,988.02
  5. Step 5: Solve for x
    x = 19,539,895,988.02/157,746.12
  6. Step 6: Final answer
    x = 123,869.27

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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.