Home / 131,710.31-197,365.89-87,177.52

Finding the Fourth Proportional to 131,710.31, 197,365.89 and 87,177.52

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Solution

The fourth proportional to 131,710.31, 197,365.89 and 87,177.52 is: 130,634.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,710.31 : 197,365.89 = 87,177.52 : x
  2. Step 2: Convert to fraction form
    131,710.31/197,365.89 = 87,177.52/x
  3. Step 3: Cross multiply
    131,710.31x = 197,365.89 × 87,177.52
  4. Step 4: Simplify right side
    131,710.31x = 17,205,868,822.79
  5. Step 5: Solve for x
    x = 17,205,868,822.79/131,710.31
  6. Step 6: Final answer
    x = 130,634.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.