Home / 287,816.55-431,725.86-88,136.13

Finding the Fourth Proportional to 287,816.55, 431,725.86 and 88,136.13

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Solution

The fourth proportional to 287,816.55, 431,725.86 and 88,136.13 is: 132,204.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,816.55 : 431,725.86 = 88,136.13 : x
  2. Step 2: Convert to fraction form
    287,816.55/431,725.86 = 88,136.13/x
  3. Step 3: Cross multiply
    287,816.55x = 431,725.86 × 88,136.13
  4. Step 4: Simplify right side
    287,816.55x = 38,050,646,521.32
  5. Step 5: Solve for x
    x = 38,050,646,521.32/287,816.55
  6. Step 6: Final answer
    x = 132,204.51

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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.