Home / 100,859.28-139,182.76-55,537.36

Finding the Fourth Proportional to 100,859.28, 139,182.76 and 55,537.36

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Solution

The fourth proportional to 100,859.28, 139,182.76 and 55,537.36 is: 76,639.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,859.28 : 139,182.76 = 55,537.36 : x
  2. Step 2: Convert to fraction form
    100,859.28/139,182.76 = 55,537.36/x
  3. Step 3: Cross multiply
    100,859.28x = 139,182.76 × 55,537.36
  4. Step 4: Simplify right side
    100,859.28x = 7,729,843,047.91
  5. Step 5: Solve for x
    x = 7,729,843,047.91/100,859.28
  6. Step 6: Final answer
    x = 76,639.88

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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.