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Finding the Fourth Proportional to 98,671.80, 147,575.70 and 88,217.40

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Solution

The fourth proportional to 98,671.80, 147,575.70 and 88,217.40 is: 131,939.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,671.80 : 147,575.70 = 88,217.40 : x
  2. Step 2: Convert to fraction form
    98,671.80/147,575.70 = 88,217.40/x
  3. Step 3: Cross multiply
    98,671.80x = 147,575.70 × 88,217.40
  4. Step 4: Simplify right side
    98,671.80x = 13,018,744,557.18
  5. Step 5: Solve for x
    x = 13,018,744,557.18/98,671.80
  6. Step 6: Final answer
    x = 131,939.87

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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.