Home / 120,392.93-180,423.32-90,778.22

Finding the Fourth Proportional to 120,392.93, 180,423.32 and 90,778.22

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Solution

The fourth proportional to 120,392.93, 180,423.32 and 90,778.22 is: 136,042.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,392.93 : 180,423.32 = 90,778.22 : x
  2. Step 2: Convert to fraction form
    120,392.93/180,423.32 = 90,778.22/x
  3. Step 3: Cross multiply
    120,392.93x = 180,423.32 × 90,778.22
  4. Step 4: Simplify right side
    120,392.93x = 16,378,507,836.09
  5. Step 5: Solve for x
    x = 16,378,507,836.09/120,392.93
  6. Step 6: Final answer
    x = 136,042.11

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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.