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Finding the Fourth Proportional to 112,242.57, 154,895.64 and 61,255.71

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Solution

The fourth proportional to 112,242.57, 154,895.64 and 61,255.71 is: 84,533.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,242.57 : 154,895.64 = 61,255.71 : x
  2. Step 2: Convert to fraction form
    112,242.57/154,895.64 = 61,255.71/x
  3. Step 3: Cross multiply
    112,242.57x = 154,895.64 × 61,255.71
  4. Step 4: Simplify right side
    112,242.57x = 9,488,242,404.10
  5. Step 5: Solve for x
    x = 9,488,242,404.10/112,242.57
  6. Step 6: Final answer
    x = 84,533.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.