Home / 100,885.58-139,211.79-62,117.24

Finding the Fourth Proportional to 100,885.58, 139,211.79 and 62,117.24

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Solution

The fourth proportional to 100,885.58, 139,211.79 and 62,117.24 is: 85,715.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,885.58 : 139,211.79 = 62,117.24 : x
  2. Step 2: Convert to fraction form
    100,885.58/139,211.79 = 62,117.24/x
  3. Step 3: Cross multiply
    100,885.58x = 139,211.79 × 62,117.24
  4. Step 4: Simplify right side
    100,885.58x = 8,647,451,474.20
  5. Step 5: Solve for x
    x = 8,647,451,474.20/100,885.58
  6. Step 6: Final answer
    x = 85,715.44

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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.