Home / 112,834.60-155,706.30-65,103.34

Finding the Fourth Proportional to 112,834.60, 155,706.30 and 65,103.34

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Solution

The fourth proportional to 112,834.60, 155,706.30 and 65,103.34 is: 89,839.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,834.60 : 155,706.30 = 65,103.34 : x
  2. Step 2: Convert to fraction form
    112,834.60/155,706.30 = 65,103.34/x
  3. Step 3: Cross multiply
    112,834.60x = 155,706.30 × 65,103.34
  4. Step 4: Simplify right side
    112,834.60x = 10,137,000,189.04
  5. Step 5: Solve for x
    x = 10,137,000,189.04/112,834.60
  6. Step 6: Final answer
    x = 89,839.47

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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.