Home / 124,910.51-172,432.80-79,649.33

Finding the Fourth Proportional to 124,910.51, 172,432.80 and 79,649.33

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Solution

The fourth proportional to 124,910.51, 172,432.80 and 79,649.33 is: 109,951.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,910.51 : 172,432.80 = 79,649.33 : x
  2. Step 2: Convert to fraction form
    124,910.51/172,432.80 = 79,649.33/x
  3. Step 3: Cross multiply
    124,910.51x = 172,432.80 × 79,649.33
  4. Step 4: Simplify right side
    124,910.51x = 13,734,157,421.11
  5. Step 5: Solve for x
    x = 13,734,157,421.11/124,910.51
  6. Step 6: Final answer
    x = 109,951.97

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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.