Home / 90,368.20-135,455.10-34,186.60

Finding the Fourth Proportional to 90,368.20, 135,455.10 and 34,186.60

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Solution

The fourth proportional to 90,368.20, 135,455.10 and 34,186.60 is: 51,243.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,368.20 : 135,455.10 = 34,186.60 : x
  2. Step 2: Convert to fraction form
    90,368.20/135,455.10 = 34,186.60/x
  3. Step 3: Cross multiply
    90,368.20x = 135,455.10 × 34,186.60
  4. Step 4: Simplify right side
    90,368.20x = 4,630,749,321.66
  5. Step 5: Solve for x
    x = 4,630,749,321.66/90,368.20
  6. Step 6: Final answer
    x = 51,243.13

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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.