Home / 129,193.52-178,268.12-71,828.24

Finding the Fourth Proportional to 129,193.52, 178,268.12 and 71,828.24

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Solution

The fourth proportional to 129,193.52, 178,268.12 and 71,828.24 is: 99,112.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,193.52 : 178,268.12 = 71,828.24 : x
  2. Step 2: Convert to fraction form
    129,193.52/178,268.12 = 71,828.24/x
  3. Step 3: Cross multiply
    129,193.52x = 178,268.12 × 71,828.24
  4. Step 4: Simplify right side
    129,193.52x = 12,804,685,307.71
  5. Step 5: Solve for x
    x = 12,804,685,307.71/129,193.52
  6. Step 6: Final answer
    x = 99,112.44

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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.