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Finding the Fourth Proportional to 147,434.56, 203,459.70 and 80,366.56

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Solution

The fourth proportional to 147,434.56, 203,459.70 and 80,366.56 is: 110,905.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,434.56 : 203,459.70 = 80,366.56 : x
  2. Step 2: Convert to fraction form
    147,434.56/203,459.70 = 80,366.56/x
  3. Step 3: Cross multiply
    147,434.56x = 203,459.70 × 80,366.56
  4. Step 4: Simplify right side
    147,434.56x = 16,351,356,187.63
  5. Step 5: Solve for x
    x = 16,351,356,187.63/147,434.56
  6. Step 6: Final answer
    x = 110,905.86

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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.