Home / 212,326.18-318,491.70-72,095.74

Finding the Fourth Proportional to 212,326.18, 318,491.70 and 72,095.74

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Solution

The fourth proportional to 212,326.18, 318,491.70 and 72,095.74 is: 108,144.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,326.18 : 318,491.70 = 72,095.74 : x
  2. Step 2: Convert to fraction form
    212,326.18/318,491.70 = 72,095.74/x
  3. Step 3: Cross multiply
    212,326.18x = 318,491.70 × 72,095.74
  4. Step 4: Simplify right side
    212,326.18x = 22,961,894,795.36
  5. Step 5: Solve for x
    x = 22,961,894,795.36/212,326.18
  6. Step 6: Final answer
    x = 108,144.44

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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.