Home / 129,048.60-178,057.96-72,456.24

Finding the Fourth Proportional to 129,048.60, 178,057.96 and 72,456.24

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Solution

The fourth proportional to 129,048.60, 178,057.96 and 72,456.24 is: 99,973.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,048.60 : 178,057.96 = 72,456.24 : x
  2. Step 2: Convert to fraction form
    129,048.60/178,057.96 = 72,456.24/x
  3. Step 3: Cross multiply
    129,048.60x = 178,057.96 × 72,456.24
  4. Step 4: Simplify right side
    129,048.60x = 12,901,410,283.67
  5. Step 5: Solve for x
    x = 12,901,410,283.67/129,048.60
  6. Step 6: Final answer
    x = 99,973.27

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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.