Home / 90,317.62-135,475.82-70,612.75

Finding the Fourth Proportional to 90,317.62, 135,475.82 and 70,612.75

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Solution

The fourth proportional to 90,317.62, 135,475.82 and 70,612.75 is: 105,918.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,317.62 : 135,475.82 = 70,612.75 : x
  2. Step 2: Convert to fraction form
    90,317.62/135,475.82 = 70,612.75/x
  3. Step 3: Cross multiply
    90,317.62x = 135,475.82 × 70,612.75
  4. Step 4: Simplify right side
    90,317.62x = 9,566,320,208.71
  5. Step 5: Solve for x
    x = 9,566,320,208.71/90,317.62
  6. Step 6: Final answer
    x = 105,918.65

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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.