Home / 121,800.11-182,695.91-42,912.59

Finding the Fourth Proportional to 121,800.11, 182,695.91 and 42,912.59

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Solution

The fourth proportional to 121,800.11, 182,695.91 and 42,912.59 is: 64,367.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,800.11 : 182,695.91 = 42,912.59 : x
  2. Step 2: Convert to fraction form
    121,800.11/182,695.91 = 42,912.59/x
  3. Step 3: Cross multiply
    121,800.11x = 182,695.91 × 42,912.59
  4. Step 4: Simplify right side
    121,800.11x = 7,839,953,552.46
  5. Step 5: Solve for x
    x = 7,839,953,552.46/121,800.11
  6. Step 6: Final answer
    x = 64,367.38

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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.