Home / 140,724.12-194,197.32-77,061.90

Finding the Fourth Proportional to 140,724.12, 194,197.32 and 77,061.90

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Solution

The fourth proportional to 140,724.12, 194,197.32 and 77,061.90 is: 106,344.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,724.12 : 194,197.32 = 77,061.90 : x
  2. Step 2: Convert to fraction form
    140,724.12/194,197.32 = 77,061.90/x
  3. Step 3: Cross multiply
    140,724.12x = 194,197.32 × 77,061.90
  4. Step 4: Simplify right side
    140,724.12x = 14,965,214,454.11
  5. Step 5: Solve for x
    x = 14,965,214,454.11/140,724.12
  6. Step 6: Final answer
    x = 106,344.35

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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.