Home / 99,815,999.10-149,723,998.65-85,203,339.90

Finding the Fourth Proportional to 99,815,999.10, 149,723,998.65 and 85,203,339.90

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Solution

The fourth proportional to 99,815,999.10, 149,723,998.65 and 85,203,339.90 is: 127,805,009.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,815,999.10 : 149,723,998.65 = 85,203,339.90 : x
  2. Step 2: Convert to fraction form
    99,815,999.10/149,723,998.65 = 85,203,339.90/x
  3. Step 3: Cross multiply
    99,815,999.10x = 149,723,998.65 × 85,203,339.90
  4. Step 4: Simplify right side
    99,815,999.10x = 12,756,984,748,163,092
  5. Step 5: Solve for x
    x = 12,756,984,748,163,092/99,815,999.10
  6. Step 6: Final answer
    x = 127,805,009.85

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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.