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Finding the Fourth Proportional to 139,363.20, 192,321.96 and 75,701.52

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Solution

The fourth proportional to 139,363.20, 192,321.96 and 75,701.52 is: 104,468.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,363.20 : 192,321.96 = 75,701.52 : x
  2. Step 2: Convert to fraction form
    139,363.20/192,321.96 = 75,701.52/x
  3. Step 3: Cross multiply
    139,363.20x = 192,321.96 × 75,701.52
  4. Step 4: Simplify right side
    139,363.20x = 14,559,064,701.38
  5. Step 5: Solve for x
    x = 14,559,064,701.38/139,363.20
  6. Step 6: Final answer
    x = 104,468.50

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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.