Home / 131,731.12-181,787.70-71,301.16

Finding the Fourth Proportional to 131,731.12, 181,787.70 and 71,301.16

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Solution

The fourth proportional to 131,731.12, 181,787.70 and 71,301.16 is: 98,394.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,731.12 : 181,787.70 = 71,301.16 : x
  2. Step 2: Convert to fraction form
    131,731.12/181,787.70 = 71,301.16/x
  3. Step 3: Cross multiply
    131,731.12x = 181,787.70 × 71,301.16
  4. Step 4: Simplify right side
    131,731.12x = 12,961,673,883.73
  5. Step 5: Solve for x
    x = 12,961,673,883.73/131,731.12
  6. Step 6: Final answer
    x = 98,394.93

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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.