Home / 103,319.60-154,979.40-90,197.60

Finding the Fourth Proportional to 103,319.60, 154,979.40 and 90,197.60

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Solution

The fourth proportional to 103,319.60, 154,979.40 and 90,197.60 is: 135,296.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,319.60 : 154,979.40 = 90,197.60 : x
  2. Step 2: Convert to fraction form
    103,319.60/154,979.40 = 90,197.60/x
  3. Step 3: Cross multiply
    103,319.60x = 154,979.40 × 90,197.60
  4. Step 4: Simplify right side
    103,319.60x = 13,978,769,929.44
  5. Step 5: Solve for x
    x = 13,978,769,929.44/103,319.60
  6. Step 6: Final answer
    x = 135,296.40

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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.