Home / 131,814.56-181,904.26-71,385.30

Finding the Fourth Proportional to 131,814.56, 181,904.26 and 71,385.30

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Solution

The fourth proportional to 131,814.56, 181,904.26 and 71,385.30 is: 98,511.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,814.56 : 181,904.26 = 71,385.30 : x
  2. Step 2: Convert to fraction form
    131,814.56/181,904.26 = 71,385.30/x
  3. Step 3: Cross multiply
    131,814.56x = 181,904.26 × 71,385.30
  4. Step 4: Simplify right side
    131,814.56x = 12,985,290,171.38
  5. Step 5: Solve for x
    x = 12,985,290,171.38/131,814.56
  6. Step 6: Final answer
    x = 98,511.80

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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.