Home / 121,245,152.70-181,867,729.05-72,872,211.90

Finding the Fourth Proportional to 121,245,152.70, 181,867,729.05 and 72,872,211.90

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Solution

The fourth proportional to 121,245,152.70, 181,867,729.05 and 72,872,211.90 is: 109,308,317.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,245,152.70 : 181,867,729.05 = 72,872,211.90 : x
  2. Step 2: Convert to fraction form
    121,245,152.70/181,867,729.05 = 72,872,211.90/x
  3. Step 3: Cross multiply
    121,245,152.70x = 181,867,729.05 × 72,872,211.90
  4. Step 4: Simplify right side
    121,245,152.70x = 13,253,103,689,103,388
  5. Step 5: Solve for x
    x = 13,253,103,689,103,388/121,245,152.70
  6. Step 6: Final answer
    x = 109,308,317.85

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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.