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Finding the Fourth Proportional to 135,915.30, 203,484.15 and 83,427.30

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Solution

The fourth proportional to 135,915.30, 203,484.15 and 83,427.30 is: 124,902.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,915.30 : 203,484.15 = 83,427.30 : x
  2. Step 2: Convert to fraction form
    135,915.30/203,484.15 = 83,427.30/x
  3. Step 3: Cross multiply
    135,915.30x = 203,484.15 × 83,427.30
  4. Step 4: Simplify right side
    135,915.30x = 16,976,133,227.30
  5. Step 5: Solve for x
    x = 16,976,133,227.30/135,915.30
  6. Step 6: Final answer
    x = 124,902.30

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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.