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Finding the Fourth Proportional to 123,719.40, 185,579.10 and 92,615.40

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Solution

The fourth proportional to 123,719.40, 185,579.10 and 92,615.40 is: 138,923.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,719.40 : 185,579.10 = 92,615.40 : x
  2. Step 2: Convert to fraction form
    123,719.40/185,579.10 = 92,615.40/x
  3. Step 3: Cross multiply
    123,719.40x = 185,579.10 × 92,615.40
  4. Step 4: Simplify right side
    123,719.40x = 17,187,482,578.14
  5. Step 5: Solve for x
    x = 17,187,482,578.14/123,719.40
  6. Step 6: Final answer
    x = 138,923.10

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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.