Home / 131,177.60-196,985.10-87,000.20

Finding the Fourth Proportional to 131,177.60, 196,985.10 and 87,000.20

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Solution

The fourth proportional to 131,177.60, 196,985.10 and 87,000.20 is: 130,645.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,177.60 : 196,985.10 = 87,000.20 : x
  2. Step 2: Convert to fraction form
    131,177.60/196,985.10 = 87,000.20/x
  3. Step 3: Cross multiply
    131,177.60x = 196,985.10 × 87,000.20
  4. Step 4: Simplify right side
    131,177.60x = 17,137,743,097.02
  5. Step 5: Solve for x
    x = 17,137,743,097.02/131,177.60
  6. Step 6: Final answer
    x = 130,645.35

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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.