Home / 121,278,005.40-181,917,008.10-48,458,778.60

Finding the Fourth Proportional to 121,278,005.40, 181,917,008.10 and 48,458,778.60

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Solution

The fourth proportional to 121,278,005.40, 181,917,008.10 and 48,458,778.60 is: 72,688,167.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,278,005.40 : 181,917,008.10 = 48,458,778.60 : x
  2. Step 2: Convert to fraction form
    121,278,005.40/181,917,008.10 = 48,458,778.60/x
  3. Step 3: Cross multiply
    121,278,005.40x = 181,917,008.10 × 48,458,778.60
  4. Step 4: Simplify right side
    121,278,005.40x = 8,815,476,019,092,307
  5. Step 5: Solve for x
    x = 8,815,476,019,092,307/121,278,005.40
  6. Step 6: Final answer
    x = 72,688,167.90

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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.