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Finding the Fourth Proportional to 147,358, 203,354.04 and 80,290

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Solution

The fourth proportional to 147,358, 203,354.04 and 80,290 is: 110,800.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,358 : 203,354.04 = 80,290 : x
  2. Step 2: Convert to fraction form
    147,358/203,354.04 = 80,290/x
  3. Step 3: Cross multiply
    147,358x = 203,354.04 × 80,290
  4. Step 4: Simplify right side
    147,358x = 16,327,295,871.60
  5. Step 5: Solve for x
    x = 16,327,295,871.60/147,358
  6. Step 6: Final answer
    x = 110,800.20

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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.