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Finding the Fourth Proportional to 121,559.52, 181,859.76 and 92,062.56

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Solution

The fourth proportional to 121,559.52, 181,859.76 and 92,062.56 is: 137,730.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,559.52 : 181,859.76 = 92,062.56 : x
  2. Step 2: Convert to fraction form
    121,559.52/181,859.76 = 92,062.56/x
  3. Step 3: Cross multiply
    121,559.52x = 181,859.76 × 92,062.56
  4. Step 4: Simplify right side
    121,559.52x = 16,742,475,066.59
  5. Step 5: Solve for x
    x = 16,742,475,066.59/121,559.52
  6. Step 6: Final answer
    x = 137,730.68

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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.