Home / 121,403.28-182,157.40-65,177.76

Finding the Fourth Proportional to 121,403.28, 182,157.40 and 65,177.76

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Solution

The fourth proportional to 121,403.28, 182,157.40 and 65,177.76 is: 97,794.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,403.28 : 182,157.40 = 65,177.76 : x
  2. Step 2: Convert to fraction form
    121,403.28/182,157.40 = 65,177.76/x
  3. Step 3: Cross multiply
    121,403.28x = 182,157.40 × 65,177.76
  4. Step 4: Simplify right side
    121,403.28x = 11,872,611,299.42
  5. Step 5: Solve for x
    x = 11,872,611,299.42/121,403.28
  6. Step 6: Final answer
    x = 97,794.81

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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.