Home / 121,215,185.70-181,822,778.55-84,864,621.30

Finding the Fourth Proportional to 121,215,185.70, 181,822,778.55 and 84,864,621.30

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Solution

The fourth proportional to 121,215,185.70, 181,822,778.55 and 84,864,621.30 is: 127,296,931.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,215,185.70 : 181,822,778.55 = 84,864,621.30 : x
  2. Step 2: Convert to fraction form
    121,215,185.70/181,822,778.55 = 84,864,621.30/x
  3. Step 3: Cross multiply
    121,215,185.70x = 181,822,778.55 × 84,864,621.30
  4. Step 4: Simplify right side
    121,215,185.70x = 15,430,321,245,359,514
  5. Step 5: Solve for x
    x = 15,430,321,245,359,514/121,215,185.70
  6. Step 6: Final answer
    x = 127,296,931.95

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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.