Home / 121,788.40-182,488.20-101,959.60

Finding the Fourth Proportional to 121,788.40, 182,488.20 and 101,959.60

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Solution

The fourth proportional to 121,788.40, 182,488.20 and 101,959.60 is: 152,776.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,788.40 : 182,488.20 = 101,959.60 : x
  2. Step 2: Convert to fraction form
    121,788.40/182,488.20 = 101,959.60/x
  3. Step 3: Cross multiply
    121,788.40x = 182,488.20 × 101,959.60
  4. Step 4: Simplify right side
    121,788.40x = 18,606,423,876.72
  5. Step 5: Solve for x
    x = 18,606,423,876.72/121,788.40
  6. Step 6: Final answer
    x = 152,776.65

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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.