Home / 129,642.24-178,918.02-75,945.72

Finding the Fourth Proportional to 129,642.24, 178,918.02 and 75,945.72

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Solution

The fourth proportional to 129,642.24, 178,918.02 and 75,945.72 is: 104,811.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,642.24 : 178,918.02 = 75,945.72 : x
  2. Step 2: Convert to fraction form
    129,642.24/178,918.02 = 75,945.72/x
  3. Step 3: Cross multiply
    129,642.24x = 178,918.02 × 75,945.72
  4. Step 4: Simplify right side
    129,642.24x = 13,588,057,849.87
  5. Step 5: Solve for x
    x = 13,588,057,849.87/129,642.24
  6. Step 6: Final answer
    x = 104,811.96

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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.