Home / 131,140,034.12-180,969,639.32-72,401,631.86

Finding the Fourth Proportional to 131,140,034.12, 180,969,639.32 and 72,401,631.86

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Solution

The fourth proportional to 131,140,034.12, 180,969,639.32 and 72,401,631.86 is: 99,912,260.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,140,034.12 : 180,969,639.32 = 72,401,631.86 : x
  2. Step 2: Convert to fraction form
    131,140,034.12/180,969,639.32 = 72,401,631.86/x
  3. Step 3: Cross multiply
    131,140,034.12x = 180,969,639.32 × 72,401,631.86
  4. Step 4: Simplify right side
    131,140,034.12x = 13,102,497,203,883,620
  5. Step 5: Solve for x
    x = 13,102,497,203,883,620/131,140,034.12
  6. Step 6: Final answer
    x = 99,912,260.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.