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Finding the Fourth Proportional to 99,148.80, 148,291.20 and 88,694.40

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Solution

The fourth proportional to 99,148.80, 148,291.20 and 88,694.40 is: 132,655.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,148.80 : 148,291.20 = 88,694.40 : x
  2. Step 2: Convert to fraction form
    99,148.80/148,291.20 = 88,694.40/x
  3. Step 3: Cross multiply
    99,148.80x = 148,291.20 × 88,694.40
  4. Step 4: Simplify right side
    99,148.80x = 13,152,599,009.28
  5. Step 5: Solve for x
    x = 13,152,599,009.28/99,148.80
  6. Step 6: Final answer
    x = 132,655.15

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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.