Home / 90,348.62-135,415.40-68,088.60

Finding the Fourth Proportional to 90,348.62, 135,415.40 and 68,088.60

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Solution

The fourth proportional to 90,348.62, 135,415.40 and 68,088.60 is: 102,051.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,348.62 : 135,415.40 = 68,088.60 : x
  2. Step 2: Convert to fraction form
    90,348.62/135,415.40 = 68,088.60/x
  3. Step 3: Cross multiply
    90,348.62x = 135,415.40 × 68,088.60
  4. Step 4: Simplify right side
    90,348.62x = 9,220,244,664.00
  5. Step 5: Solve for x
    x = 9,220,244,664.00/90,348.62
  6. Step 6: Final answer
    x = 102,051.87

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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.