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Finding the Fourth Proportional to 104,871.78, 144,724.32 and 57,125.52

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Solution

The fourth proportional to 104,871.78, 144,724.32 and 57,125.52 is: 78,833.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,871.78 : 144,724.32 = 57,125.52 : x
  2. Step 2: Convert to fraction form
    104,871.78/144,724.32 = 57,125.52/x
  3. Step 3: Cross multiply
    104,871.78x = 144,724.32 × 57,125.52
  4. Step 4: Simplify right side
    104,871.78x = 8,267,452,036.65
  5. Step 5: Solve for x
    x = 8,267,452,036.65/104,871.78
  6. Step 6: Final answer
    x = 78,833.91

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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.