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Finding the Fourth Proportional to 148,399.95, 204,862.86 and 84,725.45

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Solution

The fourth proportional to 148,399.95, 204,862.86 and 84,725.45 is: 116,961.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,399.95 : 204,862.86 = 84,725.45 : x
  2. Step 2: Convert to fraction form
    148,399.95/204,862.86 = 84,725.45/x
  3. Step 3: Cross multiply
    148,399.95x = 204,862.86 × 84,725.45
  4. Step 4: Simplify right side
    148,399.95x = 17,357,096,977.47
  5. Step 5: Solve for x
    x = 17,357,096,977.47/148,399.95
  6. Step 6: Final answer
    x = 116,961.61

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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.