Home / 208,177,131.30-312,041,748.15-78,734,724.90

Finding the Fourth Proportional to 208,177,131.30, 312,041,748.15 and 78,734,724.90

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Solution

The fourth proportional to 208,177,131.30, 312,041,748.15 and 78,734,724.90 is: 118,017,387.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,177,131.30 : 312,041,748.15 = 78,734,724.90 : x
  2. Step 2: Convert to fraction form
    208,177,131.30/312,041,748.15 = 78,734,724.90/x
  3. Step 3: Cross multiply
    208,177,131.30x = 312,041,748.15 × 78,734,724.90
  4. Step 4: Simplify right side
    208,177,131.30x = 24,568,521,197,905,332
  5. Step 5: Solve for x
    x = 24,568,521,197,905,332/208,177,131.30
  6. Step 6: Final answer
    x = 118,017,387.62

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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.