Home / 99,690.40-137,572.22-54,367.57

Finding the Fourth Proportional to 99,690.40, 137,572.22 and 54,367.57

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Solution

The fourth proportional to 99,690.40, 137,572.22 and 54,367.57 is: 75,026.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,690.40 : 137,572.22 = 54,367.57 : x
  2. Step 2: Convert to fraction form
    99,690.40/137,572.22 = 54,367.57/x
  3. Step 3: Cross multiply
    99,690.40x = 137,572.22 × 54,367.57
  4. Step 4: Simplify right side
    99,690.40x = 7,479,466,341.21
  5. Step 5: Solve for x
    x = 7,479,466,341.21/99,690.40
  6. Step 6: Final answer
    x = 75,026.95

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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.