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Finding the Fourth Proportional to 147,431.79, 203,455.40 and 80,363.79

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Solution

The fourth proportional to 147,431.79, 203,455.40 and 80,363.79 is: 110,901.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,431.79 : 203,455.40 = 80,363.79 : x
  2. Step 2: Convert to fraction form
    147,431.79/203,455.40 = 80,363.79/x
  3. Step 3: Cross multiply
    147,431.79x = 203,455.40 × 80,363.79
  4. Step 4: Simplify right side
    147,431.79x = 16,350,446,638.15
  5. Step 5: Solve for x
    x = 16,350,446,638.15/147,431.79
  6. Step 6: Final answer
    x = 110,901.77

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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.