Home / 90,131,506.86-135,178,343.04-25,420,178.31

Finding the Fourth Proportional to 90,131,506.86, 135,178,343.04 and 25,420,178.31

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Solution

The fourth proportional to 90,131,506.86, 135,178,343.04 and 25,420,178.31 is: 38,124,932.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,131,506.86 : 135,178,343.04 = 25,420,178.31 : x
  2. Step 2: Convert to fraction form
    90,131,506.86/135,178,343.04 = 25,420,178.31/x
  3. Step 3: Cross multiply
    90,131,506.86x = 135,178,343.04 × 25,420,178.31
  4. Step 4: Simplify right side
    90,131,506.86x = 3,436,257,583,727,147
  5. Step 5: Solve for x
    x = 3,436,257,583,727,147/90,131,506.86
  6. Step 6: Final answer
    x = 38,124,932.15

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1.5x scale

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.