Home / 129,356.30-178,511.27-71,995.34

Finding the Fourth Proportional to 129,356.30, 178,511.27 and 71,995.34

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Solution

The fourth proportional to 129,356.30, 178,511.27 and 71,995.34 is: 99,353.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,356.30 : 178,511.27 = 71,995.34 : x
  2. Step 2: Convert to fraction form
    129,356.30/178,511.27 = 71,995.34/x
  3. Step 3: Cross multiply
    129,356.30x = 178,511.27 × 71,995.34
  4. Step 4: Simplify right side
    129,356.30x = 12,851,979,663.78
  5. Step 5: Solve for x
    x = 12,851,979,663.78/129,356.30
  6. Step 6: Final answer
    x = 99,353.33

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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.