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Finding the Fourth Proportional to 136,151.43, 187,874.57 and 75,712.30

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Solution

The fourth proportional to 136,151.43, 187,874.57 and 75,712.30 is: 104,474.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,151.43 : 187,874.57 = 75,712.30 : x
  2. Step 2: Convert to fraction form
    136,151.43/187,874.57 = 75,712.30/x
  3. Step 3: Cross multiply
    136,151.43x = 187,874.57 × 75,712.30
  4. Step 4: Simplify right side
    136,151.43x = 14,224,415,525.81
  5. Step 5: Solve for x
    x = 14,224,415,525.81/136,151.43
  6. Step 6: Final answer
    x = 104,474.97

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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.