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Finding the Fourth Proportional to 142,751.62, 213,941.40 and 79,569.19

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Solution

The fourth proportional to 142,751.62, 213,941.40 and 79,569.19 is: 119,250.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,751.62 : 213,941.40 = 79,569.19 : x
  2. Step 2: Convert to fraction form
    142,751.62/213,941.40 = 79,569.19/x
  3. Step 3: Cross multiply
    142,751.62x = 213,941.40 × 79,569.19
  4. Step 4: Simplify right side
    142,751.62x = 17,023,143,905.47
  5. Step 5: Solve for x
    x = 17,023,143,905.47/142,751.62
  6. Step 6: Final answer
    x = 119,250.09

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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.