Home / 100,886.27-139,224.02-55,565.28

Finding the Fourth Proportional to 100,886.27, 139,224.02 and 55,565.28

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Solution

The fourth proportional to 100,886.27, 139,224.02 and 55,565.28 is: 76,680.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,886.27 : 139,224.02 = 55,565.28 : x
  2. Step 2: Convert to fraction form
    100,886.27/139,224.02 = 55,565.28/x
  3. Step 3: Cross multiply
    100,886.27x = 139,224.02 × 55,565.28
  4. Step 4: Simplify right side
    100,886.27x = 7,736,021,376.20
  5. Step 5: Solve for x
    x = 7,736,021,376.20/100,886.27
  6. Step 6: Final answer
    x = 76,680.62

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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.