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Finding the Fourth Proportional to 142,794.74, 214,265.55 and 67,999.70

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Solution

The fourth proportional to 142,794.74, 214,265.55 and 67,999.70 is: 102,034.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,794.74 : 214,265.55 = 67,999.70 : x
  2. Step 2: Convert to fraction form
    142,794.74/214,265.55 = 67,999.70/x
  3. Step 3: Cross multiply
    142,794.74x = 214,265.55 × 67,999.70
  4. Step 4: Simplify right side
    142,794.74x = 14,569,993,120.34
  5. Step 5: Solve for x
    x = 14,569,993,120.34/142,794.74
  6. Step 6: Final answer
    x = 102,034.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.