Home / 128,169.96-176,853.06-71,581.56

Finding the Fourth Proportional to 128,169.96, 176,853.06 and 71,581.56

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Solution

The fourth proportional to 128,169.96, 176,853.06 and 71,581.56 is: 98,770.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,169.96 : 176,853.06 = 71,581.56 : x
  2. Step 2: Convert to fraction form
    128,169.96/176,853.06 = 71,581.56/x
  3. Step 3: Cross multiply
    128,169.96x = 176,853.06 × 71,581.56
  4. Step 4: Simplify right side
    128,169.96x = 12,659,417,925.57
  5. Step 5: Solve for x
    x = 12,659,417,925.57/128,169.96
  6. Step 6: Final answer
    x = 98,770.55

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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.