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Finding the Fourth Proportional to 119,437.23, 164,824.17 and 65,720.87

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Solution

The fourth proportional to 119,437.23, 164,824.17 and 65,720.87 is: 90,695.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,437.23 : 164,824.17 = 65,720.87 : x
  2. Step 2: Convert to fraction form
    119,437.23/164,824.17 = 65,720.87/x
  3. Step 3: Cross multiply
    119,437.23x = 164,824.17 × 65,720.87
  4. Step 4: Simplify right side
    119,437.23x = 10,832,387,396.94
  5. Step 5: Solve for x
    x = 10,832,387,396.94/119,437.23
  6. Step 6: Final answer
    x = 90,695.23

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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.