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Finding the Fourth Proportional to 112,903.73, 155,792.82 and 61,903.04

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Solution

The fourth proportional to 112,903.73, 155,792.82 and 61,903.04 is: 85,418.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,903.73 : 155,792.82 = 61,903.04 : x
  2. Step 2: Convert to fraction form
    112,903.73/155,792.82 = 61,903.04/x
  3. Step 3: Cross multiply
    112,903.73x = 155,792.82 × 61,903.04
  4. Step 4: Simplify right side
    112,903.73x = 9,644,049,122.38
  5. Step 5: Solve for x
    x = 9,644,049,122.38/112,903.73
  6. Step 6: Final answer
    x = 85,418.34

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1.5x scale

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.