Home / 187,316.80-281,011.65-80,700.55

Finding the Fourth Proportional to 187,316.80, 281,011.65 and 80,700.55

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Solution

The fourth proportional to 187,316.80, 281,011.65 and 80,700.55 is: 121,066.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,316.80 : 281,011.65 = 80,700.55 : x
  2. Step 2: Convert to fraction form
    187,316.80/281,011.65 = 80,700.55/x
  3. Step 3: Cross multiply
    187,316.80x = 281,011.65 × 80,700.55
  4. Step 4: Simplify right side
    187,316.80x = 22,677,794,711.41
  5. Step 5: Solve for x
    x = 22,677,794,711.41/187,316.80
  6. Step 6: Final answer
    x = 121,066.53

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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.