Home / 121,279,008.30-181,918,512.45-66,670,493.10

Finding the Fourth Proportional to 121,279,008.30, 181,918,512.45 and 66,670,493.10

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Solution

The fourth proportional to 121,279,008.30, 181,918,512.45 and 66,670,493.10 is: 100,005,739.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,279,008.30 : 181,918,512.45 = 66,670,493.10 : x
  2. Step 2: Convert to fraction form
    121,279,008.30/181,918,512.45 = 66,670,493.10/x
  3. Step 3: Cross multiply
    121,279,008.30x = 181,918,512.45 × 66,670,493.10
  4. Step 4: Simplify right side
    121,279,008.30x = 12,128,596,929,059,988
  5. Step 5: Solve for x
    x = 12,128,596,929,059,988/121,279,008.30
  6. Step 6: Final answer
    x = 100,005,739.65

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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.