Home / 99,830.55-137,765.12-54,508.40

Finding the Fourth Proportional to 99,830.55, 137,765.12 and 54,508.40

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Solution

The fourth proportional to 99,830.55, 137,765.12 and 54,508.40 is: 75,221.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,830.55 : 137,765.12 = 54,508.40 : x
  2. Step 2: Convert to fraction form
    99,830.55/137,765.12 = 54,508.40/x
  3. Step 3: Cross multiply
    99,830.55x = 137,765.12 × 54,508.40
  4. Step 4: Simplify right side
    99,830.55x = 7,509,355,994.47
  5. Step 5: Solve for x
    x = 7,509,355,994.47/99,830.55
  6. Step 6: Final answer
    x = 75,221.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.