Home / 138,402,271.20-207,603,406.80-80,864,925.60

Finding the Fourth Proportional to 138,402,271.20, 207,603,406.80 and 80,864,925.60

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Solution

The fourth proportional to 138,402,271.20, 207,603,406.80 and 80,864,925.60 is: 121,297,388.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,402,271.20 : 207,603,406.80 = 80,864,925.60 : x
  2. Step 2: Convert to fraction form
    138,402,271.20/207,603,406.80 = 80,864,925.60/x
  3. Step 3: Cross multiply
    138,402,271.20x = 207,603,406.80 × 80,864,925.60
  4. Step 4: Simplify right side
    138,402,271.20x = 16,787,834,045,188,534
  5. Step 5: Solve for x
    x = 16,787,834,045,188,534/138,402,271.20
  6. Step 6: Final answer
    x = 121,297,388.40

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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.