Home / 129,716.70-178,988.46-73,117.14

Finding the Fourth Proportional to 129,716.70, 178,988.46 and 73,117.14

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Solution

The fourth proportional to 129,716.70, 178,988.46 and 73,117.14 is: 100,890.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,716.70 : 178,988.46 = 73,117.14 : x
  2. Step 2: Convert to fraction form
    129,716.70/178,988.46 = 73,117.14/x
  3. Step 3: Cross multiply
    129,716.70x = 178,988.46 × 73,117.14
  4. Step 4: Simplify right side
    129,716.70x = 13,087,124,288.20
  5. Step 5: Solve for x
    x = 13,087,124,288.20/129,716.70
  6. Step 6: Final answer
    x = 100,890.05

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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.