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Finding the Fourth Proportional to 123,257.40, 184,626.90 and 102,521.40

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Solution

The fourth proportional to 123,257.40, 184,626.90 and 102,521.40 is: 153,566.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,257.40 : 184,626.90 = 102,521.40 : x
  2. Step 2: Convert to fraction form
    123,257.40/184,626.90 = 102,521.40/x
  3. Step 3: Cross multiply
    123,257.40x = 184,626.90 × 102,521.40
  4. Step 4: Simplify right side
    123,257.40x = 18,928,208,265.66
  5. Step 5: Solve for x
    x = 18,928,208,265.66/123,257.40
  6. Step 6: Final answer
    x = 153,566.51

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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.