Home / 142,763.20-214,144.80-90,001.60

Finding the Fourth Proportional to 142,763.20, 214,144.80 and 90,001.60

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Solution

The fourth proportional to 142,763.20, 214,144.80 and 90,001.60 is: 135,002.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,763.20 : 214,144.80 = 90,001.60 : x
  2. Step 2: Convert to fraction form
    142,763.20/214,144.80 = 90,001.60/x
  3. Step 3: Cross multiply
    142,763.20x = 214,144.80 × 90,001.60
  4. Step 4: Simplify right side
    142,763.20x = 19,273,374,631.68
  5. Step 5: Solve for x
    x = 19,273,374,631.68/142,763.20
  6. Step 6: Final answer
    x = 135,002.40

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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.