Home / 121,501.20-182,251.80-112,643.85

Finding the Fourth Proportional to 121,501.20, 182,251.80 and 112,643.85

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Solution

The fourth proportional to 121,501.20, 182,251.80 and 112,643.85 is: 168,965.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,501.20 : 182,251.80 = 112,643.85 : x
  2. Step 2: Convert to fraction form
    121,501.20/182,251.80 = 112,643.85/x
  3. Step 3: Cross multiply
    121,501.20x = 182,251.80 × 112,643.85
  4. Step 4: Simplify right side
    121,501.20x = 20,529,544,421.43
  5. Step 5: Solve for x
    x = 20,529,544,421.43/121,501.20
  6. Step 6: Final answer
    x = 168,965.78

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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.