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Finding the Fourth Proportional to 123,904.20, 185,904.90 and 45,026.40

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Solution

The fourth proportional to 123,904.20, 185,904.90 and 45,026.40 is: 67,557.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,904.20 : 185,904.90 = 45,026.40 : x
  2. Step 2: Convert to fraction form
    123,904.20/185,904.90 = 45,026.40/x
  3. Step 3: Cross multiply
    123,904.20x = 185,904.90 × 45,026.40
  4. Step 4: Simplify right side
    123,904.20x = 8,370,628,389.36
  5. Step 5: Solve for x
    x = 8,370,628,389.36/123,904.20
  6. Step 6: Final answer
    x = 67,557.26

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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.