Home / 142,768.20-214,152.30-90,006.60

Finding the Fourth Proportional to 142,768.20, 214,152.30 and 90,006.60

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Solution

The fourth proportional to 142,768.20, 214,152.30 and 90,006.60 is: 135,009.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,768.20 : 214,152.30 = 90,006.60 : x
  2. Step 2: Convert to fraction form
    142,768.20/214,152.30 = 90,006.60/x
  3. Step 3: Cross multiply
    142,768.20x = 214,152.30 × 90,006.60
  4. Step 4: Simplify right side
    142,768.20x = 19,275,120,405.18
  5. Step 5: Solve for x
    x = 19,275,120,405.18/142,768.20
  6. Step 6: Final answer
    x = 135,009.90

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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.