Home / 138,023,999.20-207,035,998.80-40,994,682.40

Finding the Fourth Proportional to 138,023,999.20, 207,035,998.80 and 40,994,682.40

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Solution

The fourth proportional to 138,023,999.20, 207,035,998.80 and 40,994,682.40 is: 61,492,023.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,023,999.20 : 207,035,998.80 = 40,994,682.40 : x
  2. Step 2: Convert to fraction form
    138,023,999.20/207,035,998.80 = 40,994,682.40/x
  3. Step 3: Cross multiply
    138,023,999.20x = 207,035,998.80 × 40,994,682.40
  4. Step 4: Simplify right side
    138,023,999.20x = 8,487,375,016,172,781
  5. Step 5: Solve for x
    x = 8,487,375,016,172,781/138,023,999.20
  6. Step 6: Final answer
    x = 61,492,023.60

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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.