Home / 129,645.04-178,910.14-73,058.44

Finding the Fourth Proportional to 129,645.04, 178,910.14 and 73,058.44

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Solution

The fourth proportional to 129,645.04, 178,910.14 and 73,058.44 is: 100,820.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,645.04 : 178,910.14 = 73,058.44 : x
  2. Step 2: Convert to fraction form
    129,645.04/178,910.14 = 73,058.44/x
  3. Step 3: Cross multiply
    129,645.04x = 178,910.14 × 73,058.44
  4. Step 4: Simplify right side
    129,645.04x = 13,070,895,728.58
  5. Step 5: Solve for x
    x = 13,070,895,728.58/129,645.04
  6. Step 6: Final answer
    x = 100,820.64

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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.