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Finding the Fourth Proportional to 169,635.70, 254,453.55 and 138,915.70

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Solution

The fourth proportional to 169,635.70, 254,453.55 and 138,915.70 is: 208,373.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,635.70 : 254,453.55 = 138,915.70 : x
  2. Step 2: Convert to fraction form
    169,635.70/254,453.55 = 138,915.70/x
  3. Step 3: Cross multiply
    169,635.70x = 254,453.55 × 138,915.70
  4. Step 4: Simplify right side
    169,635.70x = 35,347,593,015.74
  5. Step 5: Solve for x
    x = 35,347,593,015.74/169,635.70
  6. Step 6: Final answer
    x = 208,373.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.