Home / 121,126,821.30-181,690,231.95-107,256,211.20

Finding the Fourth Proportional to 121,126,821.30, 181,690,231.95 and 107,256,211.20

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Solution

The fourth proportional to 121,126,821.30, 181,690,231.95 and 107,256,211.20 is: 160,884,316.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,126,821.30 : 181,690,231.95 = 107,256,211.20 : x
  2. Step 2: Convert to fraction form
    121,126,821.30/181,690,231.95 = 107,256,211.20/x
  3. Step 3: Cross multiply
    121,126,821.30x = 181,690,231.95 × 107,256,211.20
  4. Step 4: Simplify right side
    121,126,821.30x = 19,487,405,891,006,188
  5. Step 5: Solve for x
    x = 19,487,405,891,006,188/121,126,821.30
  6. Step 6: Final answer
    x = 160,884,316.80

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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.