Home / 126,154.56-174,070.40-77,738.88

Finding the Fourth Proportional to 126,154.56, 174,070.40 and 77,738.88

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Solution

The fourth proportional to 126,154.56, 174,070.40 and 77,738.88 is: 107,265.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,154.56 : 174,070.40 = 77,738.88 : x
  2. Step 2: Convert to fraction form
    126,154.56/174,070.40 = 77,738.88/x
  3. Step 3: Cross multiply
    126,154.56x = 174,070.40 × 77,738.88
  4. Step 4: Simplify right side
    126,154.56x = 13,532,037,937.15
  5. Step 5: Solve for x
    x = 13,532,037,937.15/126,154.56
  6. Step 6: Final answer
    x = 107,265.55

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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.