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Finding the Fourth Proportional to 121,775.40, 182,403.90 and 101,039.40

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Solution

The fourth proportional to 121,775.40, 182,403.90 and 101,039.40 is: 151,344.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,775.40 : 182,403.90 = 101,039.40 : x
  2. Step 2: Convert to fraction form
    121,775.40/182,403.90 = 101,039.40/x
  3. Step 3: Cross multiply
    121,775.40x = 182,403.90 × 101,039.40
  4. Step 4: Simplify right side
    121,775.40x = 18,429,980,613.66
  5. Step 5: Solve for x
    x = 18,429,980,613.66/121,775.40
  6. Step 6: Final answer
    x = 151,344.04

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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.