Home / 121,287,135.20-181,930,702.80-99,763,774.70

Finding the Fourth Proportional to 121,287,135.20, 181,930,702.80 and 99,763,774.70

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Solution

The fourth proportional to 121,287,135.20, 181,930,702.80 and 99,763,774.70 is: 149,645,662.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,287,135.20 : 181,930,702.80 = 99,763,774.70 : x
  2. Step 2: Convert to fraction form
    121,287,135.20/181,930,702.80 = 99,763,774.70/x
  3. Step 3: Cross multiply
    121,287,135.20x = 181,930,702.80 × 99,763,774.70
  4. Step 4: Simplify right side
    121,287,135.20x = 18,150,093,645,151,860
  5. Step 5: Solve for x
    x = 18,150,093,645,151,860/121,287,135.20
  6. Step 6: Final answer
    x = 149,645,662.05

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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.