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Finding the Fourth Proportional to 122,585.79, 183,865.01 and 42,609.94

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Solution

The fourth proportional to 122,585.79, 183,865.01 and 42,609.94 is: 63,910.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,585.79 : 183,865.01 = 42,609.94 : x
  2. Step 2: Convert to fraction form
    122,585.79/183,865.01 = 42,609.94/x
  3. Step 3: Cross multiply
    122,585.79x = 183,865.01 × 42,609.94
  4. Step 4: Simplify right side
    122,585.79x = 7,834,476,124.87
  5. Step 5: Solve for x
    x = 7,834,476,124.87/122,585.79
  6. Step 6: Final answer
    x = 63,910.15

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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.