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Finding the Fourth Proportional to 119,615.95, 165,070.17 and 65,167.85

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Solution

The fourth proportional to 119,615.95, 165,070.17 and 65,167.85 is: 89,931.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,615.95 : 165,070.17 = 65,167.85 : x
  2. Step 2: Convert to fraction form
    119,615.95/165,070.17 = 65,167.85/x
  3. Step 3: Cross multiply
    119,615.95x = 165,070.17 × 65,167.85
  4. Step 4: Simplify right side
    119,615.95x = 10,757,268,078.03
  5. Step 5: Solve for x
    x = 10,757,268,078.03/119,615.95
  6. Step 6: Final answer
    x = 89,931.72

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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.