Home / 131,710.43-197,366.08-87,177.64

Finding the Fourth Proportional to 131,710.43, 197,366.08 and 87,177.64

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Solution

The fourth proportional to 131,710.43, 197,366.08 and 87,177.64 is: 130,634.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,710.43 : 197,366.08 = 87,177.64 : x
  2. Step 2: Convert to fraction form
    131,710.43/197,366.08 = 87,177.64/x
  3. Step 3: Cross multiply
    131,710.43x = 197,366.08 × 87,177.64
  4. Step 4: Simplify right side
    131,710.43x = 17,205,909,070.45
  5. Step 5: Solve for x
    x = 17,205,909,070.45/131,710.43
  6. Step 6: Final answer
    x = 130,634.37

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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.