Home / 125,353.11-172,989.63-76,930.76

Finding the Fourth Proportional to 125,353.11, 172,989.63 and 76,930.76

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Solution

The fourth proportional to 125,353.11, 172,989.63 and 76,930.76 is: 106,165.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,353.11 : 172,989.63 = 76,930.76 : x
  2. Step 2: Convert to fraction form
    125,353.11/172,989.63 = 76,930.76/x
  3. Step 3: Cross multiply
    125,353.11x = 172,989.63 × 76,930.76
  4. Step 4: Simplify right side
    125,353.11x = 13,308,223,708.02
  5. Step 5: Solve for x
    x = 13,308,223,708.02/125,353.11
  6. Step 6: Final answer
    x = 106,165.88

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1.5x scale

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.