Home / 155,279.80-232,688.85-80,299.90

Finding the Fourth Proportional to 155,279.80, 232,688.85 and 80,299.90

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Solution

The fourth proportional to 155,279.80, 232,688.85 and 80,299.90 is: 120,330.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,279.80 : 232,688.85 = 80,299.90 : x
  2. Step 2: Convert to fraction form
    155,279.80/232,688.85 = 80,299.90/x
  3. Step 3: Cross multiply
    155,279.80x = 232,688.85 × 80,299.90
  4. Step 4: Simplify right side
    155,279.80x = 18,684,891,386.12
  5. Step 5: Solve for x
    x = 18,684,891,386.12/155,279.80
  6. Step 6: Final answer
    x = 120,330.47

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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.