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Finding the Fourth Proportional to 178,485.79, 267,642.55 and 103,624.78

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Solution

The fourth proportional to 178,485.79, 267,642.55 and 103,624.78 is: 155,387.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,485.79 : 267,642.55 = 103,624.78 : x
  2. Step 2: Convert to fraction form
    178,485.79/267,642.55 = 103,624.78/x
  3. Step 3: Cross multiply
    178,485.79x = 267,642.55 × 103,624.78
  4. Step 4: Simplify right side
    178,485.79x = 27,734,400,362.39
  5. Step 5: Solve for x
    x = 27,734,400,362.39/178,485.79
  6. Step 6: Final answer
    x = 155,387.16

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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.