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Finding the Fourth Proportional to 112,693.17, 155,516 and 61,704.97

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Solution

The fourth proportional to 112,693.17, 155,516 and 61,704.97 is: 85,152.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,693.17 : 155,516 = 61,704.97 : x
  2. Step 2: Convert to fraction form
    112,693.17/155,516 = 61,704.97/x
  3. Step 3: Cross multiply
    112,693.17x = 155,516 × 61,704.97
  4. Step 4: Simplify right side
    112,693.17x = 9,596,110,114.52
  5. Step 5: Solve for x
    x = 9,596,110,114.52/112,693.17
  6. Step 6: Final answer
    x = 85,152.54

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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.