Home / 99,645.72-149,142.14-54,598.38

Finding the Fourth Proportional to 99,645.72, 149,142.14 and 54,598.38

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Solution

The fourth proportional to 99,645.72, 149,142.14 and 54,598.38 is: 81,718.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,645.72 : 149,142.14 = 54,598.38 : x
  2. Step 2: Convert to fraction form
    99,645.72/149,142.14 = 54,598.38/x
  3. Step 3: Cross multiply
    99,645.72x = 149,142.14 × 54,598.38
  4. Step 4: Simplify right side
    99,645.72x = 8,142,918,488.02
  5. Step 5: Solve for x
    x = 8,142,918,488.02/99,645.72
  6. Step 6: Final answer
    x = 81,718.70

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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.