Home / 80,486,111.80-120,729,167.70-74,268,252.10

Finding the Fourth Proportional to 80,486,111.80, 120,729,167.70 and 74,268,252.10

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Solution

The fourth proportional to 80,486,111.80, 120,729,167.70 and 74,268,252.10 is: 111,402,378.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,486,111.80 : 120,729,167.70 = 74,268,252.10 : x
  2. Step 2: Convert to fraction form
    80,486,111.80/120,729,167.70 = 74,268,252.10/x
  3. Step 3: Cross multiply
    80,486,111.80x = 120,729,167.70 × 74,268,252.10
  4. Step 4: Simplify right side
    80,486,111.80x = 8,966,344,262,566,777
  5. Step 5: Solve for x
    x = 8,966,344,262,566,777/80,486,111.80
  6. Step 6: Final answer
    x = 111,402,378.15

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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.