Home / 126,638.88-174,685.50-83,618.76

Finding the Fourth Proportional to 126,638.88, 174,685.50 and 83,618.76

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Solution

The fourth proportional to 126,638.88, 174,685.50 and 83,618.76 is: 115,343.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,638.88 : 174,685.50 = 83,618.76 : x
  2. Step 2: Convert to fraction form
    126,638.88/174,685.50 = 83,618.76/x
  3. Step 3: Cross multiply
    126,638.88x = 174,685.50 × 83,618.76
  4. Step 4: Simplify right side
    126,638.88x = 14,606,984,899.98
  5. Step 5: Solve for x
    x = 14,606,984,899.98/126,638.88
  6. Step 6: Final answer
    x = 115,343.60

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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.