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Finding the Fourth Proportional to 123,886.60, 185,829.90 and 45,003.40

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Solution

The fourth proportional to 123,886.60, 185,829.90 and 45,003.40 is: 67,505.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,886.60 : 185,829.90 = 45,003.40 : x
  2. Step 2: Convert to fraction form
    123,886.60/185,829.90 = 45,003.40/x
  3. Step 3: Cross multiply
    123,886.60x = 185,829.90 × 45,003.40
  4. Step 4: Simplify right side
    123,886.60x = 8,362,977,321.66
  5. Step 5: Solve for x
    x = 8,362,977,321.66/123,886.60
  6. Step 6: Final answer
    x = 67,505.10

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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.