Home / 129,530.88-178,651.30-84,223.52

Finding the Fourth Proportional to 129,530.88, 178,651.30 and 84,223.52

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Solution

The fourth proportional to 129,530.88, 178,651.30 and 84,223.52 is: 116,162.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,530.88 : 178,651.30 = 84,223.52 : x
  2. Step 2: Convert to fraction form
    129,530.88/178,651.30 = 84,223.52/x
  3. Step 3: Cross multiply
    129,530.88x = 178,651.30 × 84,223.52
  4. Step 4: Simplify right side
    129,530.88x = 15,046,641,338.58
  5. Step 5: Solve for x
    x = 15,046,641,338.58/129,530.88
  6. Step 6: Final answer
    x = 116,162.58

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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.