Home / 100,885.05-139,211.07-62,116.72

Finding the Fourth Proportional to 100,885.05, 139,211.07 and 62,116.72

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Solution

The fourth proportional to 100,885.05, 139,211.07 and 62,116.72 is: 85,714.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,885.05 : 139,211.07 = 62,116.72 : x
  2. Step 2: Convert to fraction form
    100,885.05/139,211.07 = 62,116.72/x
  3. Step 3: Cross multiply
    100,885.05x = 139,211.07 × 62,116.72
  4. Step 4: Simplify right side
    100,885.05x = 8,647,334,824.53
  5. Step 5: Solve for x
    x = 8,647,334,824.53/100,885.05
  6. Step 6: Final answer
    x = 85,714.73

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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.