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Finding the Fourth Proportional to 122,801.80, 184,202.70 and 104,139.40

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Solution

The fourth proportional to 122,801.80, 184,202.70 and 104,139.40 is: 156,209.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,801.80 : 184,202.70 = 104,139.40 : x
  2. Step 2: Convert to fraction form
    122,801.80/184,202.70 = 104,139.40/x
  3. Step 3: Cross multiply
    122,801.80x = 184,202.70 × 104,139.40
  4. Step 4: Simplify right side
    122,801.80x = 19,182,758,656.38
  5. Step 5: Solve for x
    x = 19,182,758,656.38/122,801.80
  6. Step 6: Final answer
    x = 156,209.10

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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.