Home / 80,734,187.80-121,101,281.70-66,385,280.80

Finding the Fourth Proportional to 80,734,187.80, 121,101,281.70 and 66,385,280.80

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Solution

The fourth proportional to 80,734,187.80, 121,101,281.70 and 66,385,280.80 is: 99,577,921.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,734,187.80 : 121,101,281.70 = 66,385,280.80 : x
  2. Step 2: Convert to fraction form
    80,734,187.80/121,101,281.70 = 66,385,280.80/x
  3. Step 3: Cross multiply
    80,734,187.80x = 121,101,281.70 × 66,385,280.80
  4. Step 4: Simplify right side
    80,734,187.80x = 8,039,342,590,894,401
  5. Step 5: Solve for x
    x = 8,039,342,590,894,401/80,734,187.80
  6. Step 6: Final answer
    x = 99,577,921.20

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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.