Home / 124,920.72-172,395-71,197.06

Finding the Fourth Proportional to 124,920.72, 172,395 and 71,197.06

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Solution

The fourth proportional to 124,920.72, 172,395 and 71,197.06 is: 98,254.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,920.72 : 172,395 = 71,197.06 : x
  2. Step 2: Convert to fraction form
    124,920.72/172,395 = 71,197.06/x
  3. Step 3: Cross multiply
    124,920.72x = 172,395 × 71,197.06
  4. Step 4: Simplify right side
    124,920.72x = 12,274,017,158.70
  5. Step 5: Solve for x
    x = 12,274,017,158.70/124,920.72
  6. Step 6: Final answer
    x = 98,254.45

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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.