Home / 131,807.40-181,893.31-71,376.66

Finding the Fourth Proportional to 131,807.40, 181,893.31 and 71,376.66

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Solution

The fourth proportional to 131,807.40, 181,893.31 and 71,376.66 is: 98,499.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,807.40 : 181,893.31 = 71,376.66 : x
  2. Step 2: Convert to fraction form
    131,807.40/181,893.31 = 71,376.66/x
  3. Step 3: Cross multiply
    131,807.40x = 181,893.31 × 71,376.66
  4. Step 4: Simplify right side
    131,807.40x = 12,982,936,944.14
  5. Step 5: Solve for x
    x = 12,982,936,944.14/131,807.40
  6. Step 6: Final answer
    x = 98,499.30

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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.