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Finding the Fourth Proportional to 147,424.50, 203,445.90 and 80,356.50

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Solution

The fourth proportional to 147,424.50, 203,445.90 and 80,356.50 is: 110,892.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,424.50 : 203,445.90 = 80,356.50 : x
  2. Step 2: Convert to fraction form
    147,424.50/203,445.90 = 80,356.50/x
  3. Step 3: Cross multiply
    147,424.50x = 203,445.90 × 80,356.50
  4. Step 4: Simplify right side
    147,424.50x = 16,348,200,463.35
  5. Step 5: Solve for x
    x = 16,348,200,463.35/147,424.50
  6. Step 6: Final answer
    x = 110,892.02

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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.