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Finding the Fourth Proportional to 123,278.40, 184,658.40 and 102,542.40

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Solution

The fourth proportional to 123,278.40, 184,658.40 and 102,542.40 is: 153,598.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,278.40 : 184,658.40 = 102,542.40 : x
  2. Step 2: Convert to fraction form
    123,278.40/184,658.40 = 102,542.40/x
  3. Step 3: Cross multiply
    123,278.40x = 184,658.40 × 102,542.40
  4. Step 4: Simplify right side
    123,278.40x = 18,935,315,516.16
  5. Step 5: Solve for x
    x = 18,935,315,516.16/123,278.40
  6. Step 6: Final answer
    x = 153,598.00

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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.