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Finding the Fourth Proportional to 126,018.42, 173,930.53 and 72,339.70

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Solution

The fourth proportional to 126,018.42, 173,930.53 and 72,339.70 is: 99,843.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,018.42 : 173,930.53 = 72,339.70 : x
  2. Step 2: Convert to fraction form
    126,018.42/173,930.53 = 72,339.70/x
  3. Step 3: Cross multiply
    126,018.42x = 173,930.53 × 72,339.70
  4. Step 4: Simplify right side
    126,018.42x = 12,582,082,361.04
  5. Step 5: Solve for x
    x = 12,582,082,361.04/126,018.42
  6. Step 6: Final answer
    x = 99,843.20

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1.5x scale

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.