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Finding the Fourth Proportional to 147,613, 203,705.94 and 80,545

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Solution

The fourth proportional to 147,613, 203,705.94 and 80,545 is: 111,152.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,613 : 203,705.94 = 80,545 : x
  2. Step 2: Convert to fraction form
    147,613/203,705.94 = 80,545/x
  3. Step 3: Cross multiply
    147,613x = 203,705.94 × 80,545
  4. Step 4: Simplify right side
    147,613x = 16,407,494,937.30
  5. Step 5: Solve for x
    x = 16,407,494,937.30/147,613
  6. Step 6: Final answer
    x = 111,152.10

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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.