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Finding the Fourth Proportional to 103,640.24, 155,332.49 and 53,691.59

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Solution

The fourth proportional to 103,640.24, 155,332.49 and 53,691.59 is: 80,471.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,640.24 : 155,332.49 = 53,691.59 : x
  2. Step 2: Convert to fraction form
    103,640.24/155,332.49 = 53,691.59/x
  3. Step 3: Cross multiply
    103,640.24x = 155,332.49 × 53,691.59
  4. Step 4: Simplify right side
    103,640.24x = 8,340,048,486.63
  5. Step 5: Solve for x
    x = 8,340,048,486.63/103,640.24
  6. Step 6: Final answer
    x = 80,471.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.