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Finding the Fourth Proportional to 119,578.80, 165,019.86 and 65,864.02

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Solution

The fourth proportional to 119,578.80, 165,019.86 and 65,864.02 is: 90,892.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,578.80 : 165,019.86 = 65,864.02 : x
  2. Step 2: Convert to fraction form
    119,578.80/165,019.86 = 65,864.02/x
  3. Step 3: Cross multiply
    119,578.80x = 165,019.86 × 65,864.02
  4. Step 4: Simplify right side
    119,578.80x = 10,868,871,359.44
  5. Step 5: Solve for x
    x = 10,868,871,359.44/119,578.80
  6. Step 6: Final answer
    x = 90,892.96

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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.