Home / 154,655.22-213,360.40-100,920.90

Finding the Fourth Proportional to 154,655.22, 213,360.40 and 100,920.90

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Solution

The fourth proportional to 154,655.22, 213,360.40 and 100,920.90 is: 139,229.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,655.22 : 213,360.40 = 100,920.90 : x
  2. Step 2: Convert to fraction form
    154,655.22/213,360.40 = 100,920.90/x
  3. Step 3: Cross multiply
    154,655.22x = 213,360.40 × 100,920.90
  4. Step 4: Simplify right side
    154,655.22x = 21,532,523,592.36
  5. Step 5: Solve for x
    x = 21,532,523,592.36/154,655.22
  6. Step 6: Final answer
    x = 139,229.21

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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.