Home / 287,815.55-431,724.36-88,135.13

Finding the Fourth Proportional to 287,815.55, 431,724.36 and 88,135.13

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Solution

The fourth proportional to 287,815.55, 431,724.36 and 88,135.13 is: 132,203.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,815.55 : 431,724.36 = 88,135.13 : x
  2. Step 2: Convert to fraction form
    287,815.55/431,724.36 = 88,135.13/x
  3. Step 3: Cross multiply
    287,815.55x = 431,724.36 × 88,135.13
  4. Step 4: Simplify right side
    287,815.55x = 38,050,082,592.77
  5. Step 5: Solve for x
    x = 38,050,082,592.77/287,815.55
  6. Step 6: Final answer
    x = 132,203.01

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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.