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Finding the Fourth Proportional to 126,856.76, 175,062.32 and 76,555.76

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Solution

The fourth proportional to 126,856.76, 175,062.32 and 76,555.76 is: 105,646.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,856.76 : 175,062.32 = 76,555.76 : x
  2. Step 2: Convert to fraction form
    126,856.76/175,062.32 = 76,555.76/x
  3. Step 3: Cross multiply
    126,856.76x = 175,062.32 × 76,555.76
  4. Step 4: Simplify right side
    126,856.76x = 13,402,028,954.96
  5. Step 5: Solve for x
    x = 13,402,028,954.96/126,856.76
  6. Step 6: Final answer
    x = 105,646.94

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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.