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Finding the Fourth Proportional to 178,740.16, 268,110 and 45,620.40

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Solution

The fourth proportional to 178,740.16, 268,110 and 45,620.40 is: 68,430.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,740.16 : 268,110 = 45,620.40 : x
  2. Step 2: Convert to fraction form
    178,740.16/268,110 = 45,620.40/x
  3. Step 3: Cross multiply
    178,740.16x = 268,110 × 45,620.40
  4. Step 4: Simplify right side
    178,740.16x = 12,231,285,444
  5. Step 5: Solve for x
    x = 12,231,285,444/178,740.16
  6. Step 6: Final answer
    x = 68,430.54

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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.