Home / 90,201.01-135,454.60-78,369.34

Finding the Fourth Proportional to 90,201.01, 135,454.60 and 78,369.34

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Solution

The fourth proportional to 90,201.01, 135,454.60 and 78,369.34 is: 117,687.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,201.01 : 135,454.60 = 78,369.34 : x
  2. Step 2: Convert to fraction form
    90,201.01/135,454.60 = 78,369.34/x
  3. Step 3: Cross multiply
    90,201.01x = 135,454.60 × 78,369.34
  4. Step 4: Simplify right side
    90,201.01x = 10,615,486,924.69
  5. Step 5: Solve for x
    x = 10,615,486,924.69/90,201.01
  6. Step 6: Final answer
    x = 117,687.01

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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.