Home / 100,436.20-138,601.58-55,114.94

Finding the Fourth Proportional to 100,436.20, 138,601.58 and 55,114.94

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Solution

The fourth proportional to 100,436.20, 138,601.58 and 55,114.94 is: 76,058.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,436.20 : 138,601.58 = 55,114.94 : x
  2. Step 2: Convert to fraction form
    100,436.20/138,601.58 = 55,114.94/x
  3. Step 3: Cross multiply
    100,436.20x = 138,601.58 × 55,114.94
  4. Step 4: Simplify right side
    100,436.20x = 7,639,017,836.53
  5. Step 5: Solve for x
    x = 7,639,017,836.53/100,436.20
  6. Step 6: Final answer
    x = 76,058.41

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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.