Home / 100,885.53-139,211.73-62,117.19

Finding the Fourth Proportional to 100,885.53, 139,211.73 and 62,117.19

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Solution

The fourth proportional to 100,885.53, 139,211.73 and 62,117.19 is: 85,715.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,885.53 : 139,211.73 = 62,117.19 : x
  2. Step 2: Convert to fraction form
    100,885.53/139,211.73 = 62,117.19/x
  3. Step 3: Cross multiply
    100,885.53x = 139,211.73 × 62,117.19
  4. Step 4: Simplify right side
    100,885.53x = 8,647,441,771.74
  5. Step 5: Solve for x
    x = 8,647,441,771.74/100,885.53
  6. Step 6: Final answer
    x = 85,715.39

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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.