Home / 100,106.30-138,140.74-54,775.24

Finding the Fourth Proportional to 100,106.30, 138,140.74 and 54,775.24

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Solution

The fourth proportional to 100,106.30, 138,140.74 and 54,775.24 is: 75,586.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,106.30 : 138,140.74 = 54,775.24 : x
  2. Step 2: Convert to fraction form
    100,106.30/138,140.74 = 54,775.24/x
  3. Step 3: Cross multiply
    100,106.30x = 138,140.74 × 54,775.24
  4. Step 4: Simplify right side
    100,106.30x = 7,566,692,187.28
  5. Step 5: Solve for x
    x = 7,566,692,187.28/100,106.30
  6. Step 6: Final answer
    x = 75,586.57

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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.