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Finding the Fourth Proportional to 103,340.70, 142,640.46 and 67,536.27

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Solution

The fourth proportional to 103,340.70, 142,640.46 and 67,536.27 is: 93,219.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,340.70 : 142,640.46 = 67,536.27 : x
  2. Step 2: Convert to fraction form
    103,340.70/142,640.46 = 67,536.27/x
  3. Step 3: Cross multiply
    103,340.70x = 142,640.46 × 67,536.27
  4. Step 4: Simplify right side
    103,340.70x = 9,633,404,619.48
  5. Step 5: Solve for x
    x = 9,633,404,619.48/103,340.70
  6. Step 6: Final answer
    x = 93,219.85

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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.