Home / 121,793.20-182,685.64-42,905.36

Finding the Fourth Proportional to 121,793.20, 182,685.64 and 42,905.36

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Solution

The fourth proportional to 121,793.20, 182,685.64 and 42,905.36 is: 64,356.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,793.20 : 182,685.64 = 42,905.36 : x
  2. Step 2: Convert to fraction form
    121,793.20/182,685.64 = 42,905.36/x
  3. Step 3: Cross multiply
    121,793.20x = 182,685.64 × 42,905.36
  4. Step 4: Simplify right side
    121,793.20x = 7,838,193,151.03
  5. Step 5: Solve for x
    x = 7,838,193,151.03/121,793.20
  6. Step 6: Final answer
    x = 64,356.57

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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.