Home / 131,642.28-181,666.40-71,212.91

Finding the Fourth Proportional to 131,642.28, 181,666.40 and 71,212.91

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Solution

The fourth proportional to 131,642.28, 181,666.40 and 71,212.91 is: 98,273.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,642.28 : 181,666.40 = 71,212.91 : x
  2. Step 2: Convert to fraction form
    131,642.28/181,666.40 = 71,212.91/x
  3. Step 3: Cross multiply
    131,642.28x = 181,666.40 × 71,212.91
  4. Step 4: Simplify right side
    131,642.28x = 12,936,991,728.83
  5. Step 5: Solve for x
    x = 12,936,991,728.83/131,642.28
  6. Step 6: Final answer
    x = 98,273.84

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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.