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Finding the Fourth Proportional to 123,360.60, 185,235.30 and 70,872.60

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Solution

The fourth proportional to 123,360.60, 185,235.30 and 70,872.60 is: 106,420.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,360.60 : 185,235.30 = 70,872.60 : x
  2. Step 2: Convert to fraction form
    123,360.60/185,235.30 = 70,872.60/x
  3. Step 3: Cross multiply
    123,360.60x = 185,235.30 × 70,872.60
  4. Step 4: Simplify right side
    123,360.60x = 13,128,107,322.78
  5. Step 5: Solve for x
    x = 13,128,107,322.78/123,360.60
  6. Step 6: Final answer
    x = 106,420.59

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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.