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Finding the Fourth Proportional to 100,625.76, 138,862.08 and 58,188.24

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Solution

The fourth proportional to 100,625.76, 138,862.08 and 58,188.24 is: 80,298.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,625.76 : 138,862.08 = 58,188.24 : x
  2. Step 2: Convert to fraction form
    100,625.76/138,862.08 = 58,188.24/x
  3. Step 3: Cross multiply
    100,625.76x = 138,862.08 × 58,188.24
  4. Step 4: Simplify right side
    100,625.76x = 8,080,140,037.94
  5. Step 5: Solve for x
    x = 8,080,140,037.94/100,625.76
  6. Step 6: Final answer
    x = 80,298.92

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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.