Home / 115,526.88-159,428.31-67,781.02

Finding the Fourth Proportional to 115,526.88, 159,428.31 and 67,781.02

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Solution

The fourth proportional to 115,526.88, 159,428.31 and 67,781.02 is: 93,538.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,526.88 : 159,428.31 = 67,781.02 : x
  2. Step 2: Convert to fraction form
    115,526.88/159,428.31 = 67,781.02/x
  3. Step 3: Cross multiply
    115,526.88x = 159,428.31 × 67,781.02
  4. Step 4: Simplify right side
    115,526.88x = 10,806,213,468.68
  5. Step 5: Solve for x
    x = 10,806,213,468.68/115,526.88
  6. Step 6: Final answer
    x = 93,538.52

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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.