Home / 80,676,413.60-121,014,620.40-20,092,139.60

Finding the Fourth Proportional to 80,676,413.60, 121,014,620.40 and 20,092,139.60

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Solution

The fourth proportional to 80,676,413.60, 121,014,620.40 and 20,092,139.60 is: 30,138,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,676,413.60 : 121,014,620.40 = 20,092,139.60 : x
  2. Step 2: Convert to fraction form
    80,676,413.60/121,014,620.40 = 20,092,139.60/x
  3. Step 3: Cross multiply
    80,676,413.60x = 121,014,620.40 × 20,092,139.60
  4. Step 4: Simplify right side
    80,676,413.60x = 2,431,442,646,717,808
  5. Step 5: Solve for x
    x = 2,431,442,646,717,808/80,676,413.60
  6. Step 6: Final answer
    x = 30,138,209.40

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1.5x scale

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.