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Finding the Fourth Proportional to 119,354.28, 164,708.82 and 65,640.12

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Solution

The fourth proportional to 119,354.28, 164,708.82 and 65,640.12 is: 90,583.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,354.28 : 164,708.82 = 65,640.12 : x
  2. Step 2: Convert to fraction form
    119,354.28/164,708.82 = 65,640.12/x
  3. Step 3: Cross multiply
    119,354.28x = 164,708.82 × 65,640.12
  4. Step 4: Simplify right side
    119,354.28x = 10,811,506,709.86
  5. Step 5: Solve for x
    x = 10,811,506,709.86/119,354.28
  6. Step 6: Final answer
    x = 90,583.32

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1.5x scale

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.