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Finding the Fourth Proportional to 178,763.45, 268,144.92 and 45,643.73

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Solution

The fourth proportional to 178,763.45, 268,144.92 and 45,643.73 is: 68,465.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,763.45 : 268,144.92 = 45,643.73 : x
  2. Step 2: Convert to fraction form
    178,763.45/268,144.92 = 45,643.73/x
  3. Step 3: Cross multiply
    178,763.45x = 268,144.92 × 45,643.73
  4. Step 4: Simplify right side
    178,763.45x = 12,239,132,988.63
  5. Step 5: Solve for x
    x = 12,239,132,988.63/178,763.45
  6. Step 6: Final answer
    x = 68,465.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.