Home / 90,805.86-136,246.32-40,178.34

Finding the Fourth Proportional to 90,805.86, 136,246.32 and 40,178.34

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Solution

The fourth proportional to 90,805.86, 136,246.32 and 40,178.34 is: 60,284.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,805.86 : 136,246.32 = 40,178.34 : x
  2. Step 2: Convert to fraction form
    90,805.86/136,246.32 = 40,178.34/x
  3. Step 3: Cross multiply
    90,805.86x = 136,246.32 × 40,178.34
  4. Step 4: Simplify right side
    90,805.86x = 5,474,150,968.71
  5. Step 5: Solve for x
    x = 5,474,150,968.71/90,805.86
  6. Step 6: Final answer
    x = 60,284.12

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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.