Home / 131,140,035.12-180,969,640.70-72,401,632.86

Finding the Fourth Proportional to 131,140,035.12, 180,969,640.70 and 72,401,632.86

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Solution

The fourth proportional to 131,140,035.12, 180,969,640.70 and 72,401,632.86 is: 99,912,261.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,140,035.12 : 180,969,640.70 = 72,401,632.86 : x
  2. Step 2: Convert to fraction form
    131,140,035.12/180,969,640.70 = 72,401,632.86/x
  3. Step 3: Cross multiply
    131,140,035.12x = 180,969,640.70 × 72,401,632.86
  4. Step 4: Simplify right side
    131,140,035.12x = 13,102,497,484,767,512
  5. Step 5: Solve for x
    x = 13,102,497,484,767,512/131,140,035.12
  6. Step 6: Final answer
    x = 99,912,261.52

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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.