Home / 126,501.72-174,652.88-78,825.12

Finding the Fourth Proportional to 126,501.72, 174,652.88 and 78,825.12

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Solution

The fourth proportional to 126,501.72, 174,652.88 and 78,825.12 is: 108,828.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,501.72 : 174,652.88 = 78,825.12 : x
  2. Step 2: Convert to fraction form
    126,501.72/174,652.88 = 78,825.12/x
  3. Step 3: Cross multiply
    126,501.72x = 174,652.88 × 78,825.12
  4. Step 4: Simplify right side
    126,501.72x = 13,767,034,224.35
  5. Step 5: Solve for x
    x = 13,767,034,224.35/126,501.72
  6. Step 6: Final answer
    x = 108,828.83

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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.