Home / 80,837.64-121,530.11-65,152.73

Finding the Fourth Proportional to 80,837.64, 121,530.11 and 65,152.73

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Solution

The fourth proportional to 80,837.64, 121,530.11 and 65,152.73 is: 97,949.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,837.64 : 121,530.11 = 65,152.73 : x
  2. Step 2: Convert to fraction form
    80,837.64/121,530.11 = 65,152.73/x
  3. Step 3: Cross multiply
    80,837.64x = 121,530.11 × 65,152.73
  4. Step 4: Simplify right side
    80,837.64x = 7,918,018,421.76
  5. Step 5: Solve for x
    x = 7,918,018,421.76/80,837.64
  6. Step 6: Final answer
    x = 97,949.65

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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.