Home / 126,502.20-174,653.55-78,825.60

Finding the Fourth Proportional to 126,502.20, 174,653.55 and 78,825.60

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Solution

The fourth proportional to 126,502.20, 174,653.55 and 78,825.60 is: 108,829.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,502.20 : 174,653.55 = 78,825.60 : x
  2. Step 2: Convert to fraction form
    126,502.20/174,653.55 = 78,825.60/x
  3. Step 3: Cross multiply
    126,502.20x = 174,653.55 × 78,825.60
  4. Step 4: Simplify right side
    126,502.20x = 13,767,170,870.88
  5. Step 5: Solve for x
    x = 13,767,170,870.88/126,502.20
  6. Step 6: Final answer
    x = 108,829.50

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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.