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Finding the Fourth Proportional to 102,901.20, 154,060.20 and 92,403.60

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Solution

The fourth proportional to 102,901.20, 154,060.20 and 92,403.60 is: 138,343.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,901.20 : 154,060.20 = 92,403.60 : x
  2. Step 2: Convert to fraction form
    102,901.20/154,060.20 = 92,403.60/x
  3. Step 3: Cross multiply
    102,901.20x = 154,060.20 × 92,403.60
  4. Step 4: Simplify right side
    102,901.20x = 14,235,717,096.72
  5. Step 5: Solve for x
    x = 14,235,717,096.72/102,901.20
  6. Step 6: Final answer
    x = 138,343.55

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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.