Home / 92,690.20-139,035.30-89,061.40

Finding the Fourth Proportional to 92,690.20, 139,035.30 and 89,061.40

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Solution

The fourth proportional to 92,690.20, 139,035.30 and 89,061.40 is: 133,592.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,690.20 : 139,035.30 = 89,061.40 : x
  2. Step 2: Convert to fraction form
    92,690.20/139,035.30 = 89,061.40/x
  3. Step 3: Cross multiply
    92,690.20x = 139,035.30 × 89,061.40
  4. Step 4: Simplify right side
    92,690.20x = 12,382,678,467.42
  5. Step 5: Solve for x
    x = 12,382,678,467.42/92,690.20
  6. Step 6: Final answer
    x = 133,592.10

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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.