Home / 149,381.40-206,079.66-100,967.88

Finding the Fourth Proportional to 149,381.40, 206,079.66 and 100,967.88

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Solution

The fourth proportional to 149,381.40, 206,079.66 and 100,967.88 is: 139,290.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,381.40 : 206,079.66 = 100,967.88 : x
  2. Step 2: Convert to fraction form
    149,381.40/206,079.66 = 100,967.88/x
  3. Step 3: Cross multiply
    149,381.40x = 206,079.66 × 100,967.88
  4. Step 4: Simplify right side
    149,381.40x = 20,807,426,381.32
  5. Step 5: Solve for x
    x = 20,807,426,381.32/149,381.40
  6. Step 6: Final answer
    x = 139,290.61

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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.