Home / 124,723.79-172,139.85-71,001.35

Finding the Fourth Proportional to 124,723.79, 172,139.85 and 71,001.35

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Solution

The fourth proportional to 124,723.79, 172,139.85 and 71,001.35 is: 97,993.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,723.79 : 172,139.85 = 71,001.35 : x
  2. Step 2: Convert to fraction form
    124,723.79/172,139.85 = 71,001.35/x
  3. Step 3: Cross multiply
    124,723.79x = 172,139.85 × 71,001.35
  4. Step 4: Simplify right side
    124,723.79x = 12,222,161,738.80
  5. Step 5: Solve for x
    x = 12,222,161,738.80/124,723.79
  6. Step 6: Final answer
    x = 97,993.83

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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.