Home / 129,645.24-178,922.16-75,948.72

Finding the Fourth Proportional to 129,645.24, 178,922.16 and 75,948.72

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Solution

The fourth proportional to 129,645.24, 178,922.16 and 75,948.72 is: 104,816.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,645.24 : 178,922.16 = 75,948.72 : x
  2. Step 2: Convert to fraction form
    129,645.24/178,922.16 = 75,948.72/x
  3. Step 3: Cross multiply
    129,645.24x = 178,922.16 × 75,948.72
  4. Step 4: Simplify right side
    129,645.24x = 13,588,909,031.64
  5. Step 5: Solve for x
    x = 13,588,909,031.64/129,645.24
  6. Step 6: Final answer
    x = 104,816.10

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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.