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Finding the Fourth Proportional to 99,657.75, 149,487.17 and 25,785.75

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Solution

The fourth proportional to 99,657.75, 149,487.17 and 25,785.75 is: 38,678.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,657.75 : 149,487.17 = 25,785.75 : x
  2. Step 2: Convert to fraction form
    99,657.75/149,487.17 = 25,785.75/x
  3. Step 3: Cross multiply
    99,657.75x = 149,487.17 × 25,785.75
  4. Step 4: Simplify right side
    99,657.75x = 3,854,638,664.90
  5. Step 5: Solve for x
    x = 3,854,638,664.90/99,657.75
  6. Step 6: Final answer
    x = 38,678.76

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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.