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Finding the Fourth Proportional to 126,956.64, 175,212.90 and 70,378.92

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Solution

The fourth proportional to 126,956.64, 175,212.90 and 70,378.92 is: 97,129.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,956.64 : 175,212.90 = 70,378.92 : x
  2. Step 2: Convert to fraction form
    126,956.64/175,212.90 = 70,378.92/x
  3. Step 3: Cross multiply
    126,956.64x = 175,212.90 × 70,378.92
  4. Step 4: Simplify right side
    126,956.64x = 12,331,294,672.07
  5. Step 5: Solve for x
    x = 12,331,294,672.07/126,956.64
  6. Step 6: Final answer
    x = 97,129.97

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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.