Home / 129,257,921.75-178,375,728.41-70,520,592.04

Finding the Fourth Proportional to 129,257,921.75, 178,375,728.41 and 70,520,592.04

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Solution

The fourth proportional to 129,257,921.75, 178,375,728.41 and 70,520,592.04 is: 97,318,305.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,257,921.75 : 178,375,728.41 = 70,520,592.04 : x
  2. Step 2: Convert to fraction form
    129,257,921.75/178,375,728.41 = 70,520,592.04/x
  3. Step 3: Cross multiply
    129,257,921.75x = 178,375,728.41 × 70,520,592.04
  4. Step 4: Simplify right side
    129,257,921.75x = 12,579,161,972,240,904
  5. Step 5: Solve for x
    x = 12,579,161,972,240,904/129,257,921.75
  6. Step 6: Final answer
    x = 97,318,305.92

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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.