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Finding the Fourth Proportional to 98,622.60, 148,083.66 and 86,134.92

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Solution

The fourth proportional to 98,622.60, 148,083.66 and 86,134.92 is: 129,333.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,622.60 : 148,083.66 = 86,134.92 : x
  2. Step 2: Convert to fraction form
    98,622.60/148,083.66 = 86,134.92/x
  3. Step 3: Cross multiply
    98,622.60x = 148,083.66 × 86,134.92
  4. Step 4: Simplify right side
    98,622.60x = 12,755,174,207.41
  5. Step 5: Solve for x
    x = 12,755,174,207.41/98,622.60
  6. Step 6: Final answer
    x = 129,333.18

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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.