Home / 129,748.16-179,052.72-70,132.16

Finding the Fourth Proportional to 129,748.16, 179,052.72 and 70,132.16

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Solution

The fourth proportional to 129,748.16, 179,052.72 and 70,132.16 is: 96,782.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,748.16 : 179,052.72 = 70,132.16 : x
  2. Step 2: Convert to fraction form
    129,748.16/179,052.72 = 70,132.16/x
  3. Step 3: Cross multiply
    129,748.16x = 179,052.72 × 70,132.16
  4. Step 4: Simplify right side
    129,748.16x = 12,557,354,007.48
  5. Step 5: Solve for x
    x = 12,557,354,007.48/129,748.16
  6. Step 6: Final answer
    x = 96,782.52

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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.