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Finding the Fourth Proportional to 126,838.72, 175,027.80 and 70,248.88

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Solution

The fourth proportional to 126,838.72, 175,027.80 and 70,248.88 is: 96,938.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,838.72 : 175,027.80 = 70,248.88 : x
  2. Step 2: Convert to fraction form
    126,838.72/175,027.80 = 70,248.88/x
  3. Step 3: Cross multiply
    126,838.72x = 175,027.80 × 70,248.88
  4. Step 4: Simplify right side
    126,838.72x = 12,295,506,918.86
  5. Step 5: Solve for x
    x = 12,295,506,918.86/126,838.72
  6. Step 6: Final answer
    x = 96,938.12

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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.