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Finding the Fourth Proportional to 100,241.84, 138,253.92 and 64,435.52

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Solution

The fourth proportional to 100,241.84, 138,253.92 and 64,435.52 is: 88,869.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,241.84 : 138,253.92 = 64,435.52 : x
  2. Step 2: Convert to fraction form
    100,241.84/138,253.92 = 64,435.52/x
  3. Step 3: Cross multiply
    100,241.84x = 138,253.92 × 64,435.52
  4. Step 4: Simplify right side
    100,241.84x = 8,908,463,227.24
  5. Step 5: Solve for x
    x = 8,908,463,227.24/100,241.84
  6. Step 6: Final answer
    x = 88,869.71

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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.