Home / 126,455.20-174,513.24-72,740.20

Finding the Fourth Proportional to 126,455.20, 174,513.24 and 72,740.20

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Solution

The fourth proportional to 126,455.20, 174,513.24 and 72,740.20 is: 100,384.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,455.20 : 174,513.24 = 72,740.20 : x
  2. Step 2: Convert to fraction form
    126,455.20/174,513.24 = 72,740.20/x
  3. Step 3: Cross multiply
    126,455.20x = 174,513.24 × 72,740.20
  4. Step 4: Simplify right side
    126,455.20x = 12,694,127,980.25
  5. Step 5: Solve for x
    x = 12,694,127,980.25/126,455.20
  6. Step 6: Final answer
    x = 100,384.39

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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.