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Finding the Fourth Proportional to 123,234.60, 184,851.90 and 81,681.60

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Solution

The fourth proportional to 123,234.60, 184,851.90 and 81,681.60 is: 122,522.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,234.60 : 184,851.90 = 81,681.60 : x
  2. Step 2: Convert to fraction form
    123,234.60/184,851.90 = 81,681.60/x
  3. Step 3: Cross multiply
    123,234.60x = 184,851.90 × 81,681.60
  4. Step 4: Simplify right side
    123,234.60x = 15,098,998,955.04
  5. Step 5: Solve for x
    x = 15,098,998,955.04/123,234.60
  6. Step 6: Final answer
    x = 122,522.40

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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.