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Finding the Fourth Proportional to 122,666.60, 183,773.10 and 69,919.40

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Solution

The fourth proportional to 122,666.60, 183,773.10 and 69,919.40 is: 104,749.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,666.60 : 183,773.10 = 69,919.40 : x
  2. Step 2: Convert to fraction form
    122,666.60/183,773.10 = 69,919.40/x
  3. Step 3: Cross multiply
    122,666.60x = 183,773.10 × 69,919.40
  4. Step 4: Simplify right side
    122,666.60x = 12,849,304,888.14
  5. Step 5: Solve for x
    x = 12,849,304,888.14/122,666.60
  6. Step 6: Final answer
    x = 104,749.83

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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.