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Finding the Fourth Proportional to 99,159.80, 148,307.70 and 88,705.40

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Solution

The fourth proportional to 99,159.80, 148,307.70 and 88,705.40 is: 132,671.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,159.80 : 148,307.70 = 88,705.40 : x
  2. Step 2: Convert to fraction form
    99,159.80/148,307.70 = 88,705.40/x
  3. Step 3: Cross multiply
    99,159.80x = 148,307.70 × 88,705.40
  4. Step 4: Simplify right side
    99,159.80x = 13,155,693,851.58
  5. Step 5: Solve for x
    x = 13,155,693,851.58/99,159.80
  6. Step 6: Final answer
    x = 132,671.65

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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.