Home / 129,645.55-178,910.82-73,058.95

Finding the Fourth Proportional to 129,645.55, 178,910.82 and 73,058.95

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Solution

The fourth proportional to 129,645.55, 178,910.82 and 73,058.95 is: 100,821.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,645.55 : 178,910.82 = 73,058.95 : x
  2. Step 2: Convert to fraction form
    129,645.55/178,910.82 = 73,058.95/x
  3. Step 3: Cross multiply
    129,645.55x = 178,910.82 × 73,058.95
  4. Step 4: Simplify right side
    129,645.55x = 13,071,036,652.84
  5. Step 5: Solve for x
    x = 13,071,036,652.84/129,645.55
  6. Step 6: Final answer
    x = 100,821.33

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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.