Home / 131,710.68-197,366.45-87,177.89

Finding the Fourth Proportional to 131,710.68, 197,366.45 and 87,177.89

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Solution

The fourth proportional to 131,710.68, 197,366.45 and 87,177.89 is: 130,634.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,710.68 : 197,366.45 = 87,177.89 : x
  2. Step 2: Convert to fraction form
    131,710.68/197,366.45 = 87,177.89/x
  3. Step 3: Cross multiply
    131,710.68x = 197,366.45 × 87,177.89
  4. Step 4: Simplify right side
    131,710.68x = 17,205,990,667.79
  5. Step 5: Solve for x
    x = 17,205,990,667.79/131,710.68
  6. Step 6: Final answer
    x = 130,634.74

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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.