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Finding the Fourth Proportional to 100,887.60, 139,101.56 and 63,096.24

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Solution

The fourth proportional to 100,887.60, 139,101.56 and 63,096.24 is: 86,995.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,887.60 : 139,101.56 = 63,096.24 : x
  2. Step 2: Convert to fraction form
    100,887.60/139,101.56 = 63,096.24/x
  3. Step 3: Cross multiply
    100,887.60x = 139,101.56 × 63,096.24
  4. Step 4: Simplify right side
    100,887.60x = 8,776,785,414.13
  5. Step 5: Solve for x
    x = 8,776,785,414.13/100,887.60
  6. Step 6: Final answer
    x = 86,995.68

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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.