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Finding the Fourth Proportional to 104,870.57, 144,724.19 and 57,127.01

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Solution

The fourth proportional to 104,870.57, 144,724.19 and 57,127.01 is: 78,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,870.57 : 144,724.19 = 57,127.01 : x
  2. Step 2: Convert to fraction form
    104,870.57/144,724.19 = 57,127.01/x
  3. Step 3: Cross multiply
    104,870.57x = 144,724.19 × 57,127.01
  4. Step 4: Simplify right side
    104,870.57x = 8,267,659,240.12
  5. Step 5: Solve for x
    x = 8,267,659,240.12/104,870.57
  6. Step 6: Final answer
    x = 78,836.80

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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.