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Finding the Fourth Proportional to 126,290.70, 174,303.74 and 75,306.71

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Solution

The fourth proportional to 126,290.70, 174,303.74 and 75,306.71 is: 103,936.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,290.70 : 174,303.74 = 75,306.71 : x
  2. Step 2: Convert to fraction form
    126,290.70/174,303.74 = 75,306.71/x
  3. Step 3: Cross multiply
    126,290.70x = 174,303.74 × 75,306.71
  4. Step 4: Simplify right side
    126,290.70x = 13,126,241,824.12
  5. Step 5: Solve for x
    x = 13,126,241,824.12/126,290.70
  6. Step 6: Final answer
    x = 103,936.73

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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.