Home / 155,207.11-232,761.45-66,436.78

Finding the Fourth Proportional to 155,207.11, 232,761.45 and 66,436.78

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Solution

The fourth proportional to 155,207.11, 232,761.45 and 66,436.78 is: 99,634.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,207.11 : 232,761.45 = 66,436.78 : x
  2. Step 2: Convert to fraction form
    155,207.11/232,761.45 = 66,436.78/x
  3. Step 3: Cross multiply
    155,207.11x = 232,761.45 × 66,436.78
  4. Step 4: Simplify right side
    155,207.11x = 15,463,920,830.32
  5. Step 5: Solve for x
    x = 15,463,920,830.32/155,207.11
  6. Step 6: Final answer
    x = 99,634.10

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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.