Home / 115,512.18-172,979.10-73,264.20

Finding the Fourth Proportional to 115,512.18, 172,979.10 and 73,264.20

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Solution

The fourth proportional to 115,512.18, 172,979.10 and 73,264.20 is: 109,712.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,512.18 : 172,979.10 = 73,264.20 : x
  2. Step 2: Convert to fraction form
    115,512.18/172,979.10 = 73,264.20/x
  3. Step 3: Cross multiply
    115,512.18x = 172,979.10 × 73,264.20
  4. Step 4: Simplify right side
    115,512.18x = 12,673,175,378.22
  5. Step 5: Solve for x
    x = 12,673,175,378.22/115,512.18
  6. Step 6: Final answer
    x = 109,712.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.