Home / 212,607.11-318,917.96-112,632.05

Finding the Fourth Proportional to 212,607.11, 318,917.96 and 112,632.05

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Solution

The fourth proportional to 212,607.11, 318,917.96 and 112,632.05 is: 168,951.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,607.11 : 318,917.96 = 112,632.05 : x
  2. Step 2: Convert to fraction form
    212,607.11/318,917.96 = 112,632.05/x
  3. Step 3: Cross multiply
    212,607.11x = 318,917.96 × 112,632.05
  4. Step 4: Simplify right side
    212,607.11x = 35,920,381,458.87
  5. Step 5: Solve for x
    x = 35,920,381,458.87/212,607.11
  6. Step 6: Final answer
    x = 168,951.93

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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.