Home / 129,496.26-178,732.35-87,030.17

Finding the Fourth Proportional to 129,496.26, 178,732.35 and 87,030.17

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Solution

The fourth proportional to 129,496.26, 178,732.35 and 87,030.17 is: 120,120.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,496.26 : 178,732.35 = 87,030.17 : x
  2. Step 2: Convert to fraction form
    129,496.26/178,732.35 = 87,030.17/x
  3. Step 3: Cross multiply
    129,496.26x = 178,732.35 × 87,030.17
  4. Step 4: Simplify right side
    129,496.26x = 15,555,105,911.34
  5. Step 5: Solve for x
    x = 15,555,105,911.34/129,496.26
  6. Step 6: Final answer
    x = 120,120.12

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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.