Home / 99,972.92-137,949.12-64,211.42

Finding the Fourth Proportional to 99,972.92, 137,949.12 and 64,211.42

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Solution

The fourth proportional to 99,972.92, 137,949.12 and 64,211.42 is: 88,603.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,972.92 : 137,949.12 = 64,211.42 : x
  2. Step 2: Convert to fraction form
    99,972.92/137,949.12 = 64,211.42/x
  3. Step 3: Cross multiply
    99,972.92x = 137,949.12 × 64,211.42
  4. Step 4: Simplify right side
    99,972.92x = 8,857,908,193.20
  5. Step 5: Solve for x
    x = 8,857,908,193.20/99,972.92
  6. Step 6: Final answer
    x = 88,603.08

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1.5x scale

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.