Home / 131,538.62-181,534.01-77,814.96

Finding the Fourth Proportional to 131,538.62, 181,534.01 and 77,814.96

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Solution

The fourth proportional to 131,538.62, 181,534.01 and 77,814.96 is: 107,390.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,538.62 : 181,534.01 = 77,814.96 : x
  2. Step 2: Convert to fraction form
    131,538.62/181,534.01 = 77,814.96/x
  3. Step 3: Cross multiply
    131,538.62x = 181,534.01 × 77,814.96
  4. Step 4: Simplify right side
    131,538.62x = 14,126,061,337.71
  5. Step 5: Solve for x
    x = 14,126,061,337.71/131,538.62
  6. Step 6: Final answer
    x = 107,390.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.