Home / 129,228.06-178,308.57-75,502.71

Finding the Fourth Proportional to 129,228.06, 178,308.57 and 75,502.71

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Solution

The fourth proportional to 129,228.06, 178,308.57 and 75,502.71 is: 104,178.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,228.06 : 178,308.57 = 75,502.71 : x
  2. Step 2: Convert to fraction form
    129,228.06/178,308.57 = 75,502.71/x
  3. Step 3: Cross multiply
    129,228.06x = 178,308.57 × 75,502.71
  4. Step 4: Simplify right side
    129,228.06x = 13,462,780,251.22
  5. Step 5: Solve for x
    x = 13,462,780,251.22/129,228.06
  6. Step 6: Final answer
    x = 104,178.46

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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.