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Finding the Fourth Proportional to 125,037.19, 187,962.20 and 100,347.77

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Solution

The fourth proportional to 125,037.19, 187,962.20 and 100,347.77 is: 150,847.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,037.19 : 187,962.20 = 100,347.77 : x
  2. Step 2: Convert to fraction form
    125,037.19/187,962.20 = 100,347.77/x
  3. Step 3: Cross multiply
    125,037.19x = 187,962.20 × 100,347.77
  4. Step 4: Simplify right side
    125,037.19x = 18,861,587,112.56
  5. Step 5: Solve for x
    x = 18,861,587,112.56/125,037.19
  6. Step 6: Final answer
    x = 150,847.82

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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.