Home / 105,439.70-145,506.69-57,693.24

Finding the Fourth Proportional to 105,439.70, 145,506.69 and 57,693.24

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Solution

The fourth proportional to 105,439.70, 145,506.69 and 57,693.24 is: 79,616.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,439.70 : 145,506.69 = 57,693.24 : x
  2. Step 2: Convert to fraction form
    105,439.70/145,506.69 = 57,693.24/x
  3. Step 3: Cross multiply
    105,439.70x = 145,506.69 × 57,693.24
  4. Step 4: Simplify right side
    105,439.70x = 8,394,752,387.78
  5. Step 5: Solve for x
    x = 8,394,752,387.78/105,439.70
  6. Step 6: Final answer
    x = 79,616.62

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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.