Home / 129,705.17-179,001.36-73,120.19

Finding the Fourth Proportional to 129,705.17, 179,001.36 and 73,120.19

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Solution

The fourth proportional to 129,705.17, 179,001.36 and 73,120.19 is: 100,910.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,705.17 : 179,001.36 = 73,120.19 : x
  2. Step 2: Convert to fraction form
    129,705.17/179,001.36 = 73,120.19/x
  3. Step 3: Cross multiply
    129,705.17x = 179,001.36 × 73,120.19
  4. Step 4: Simplify right side
    129,705.17x = 13,088,612,558.45
  5. Step 5: Solve for x
    x = 13,088,612,558.45/129,705.17
  6. Step 6: Final answer
    x = 100,910.50

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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.