Home / 212,811.10-319,070.85-100,545.10

Finding the Fourth Proportional to 212,811.10, 319,070.85 and 100,545.10

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Solution

The fourth proportional to 212,811.10, 319,070.85 and 100,545.10 is: 150,748.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,811.10 : 319,070.85 = 100,545.10 : x
  2. Step 2: Convert to fraction form
    212,811.10/319,070.85 = 100,545.10/x
  3. Step 3: Cross multiply
    212,811.10x = 319,070.85 × 100,545.10
  4. Step 4: Simplify right side
    212,811.10x = 32,081,010,520.34
  5. Step 5: Solve for x
    x = 32,081,010,520.34/212,811.10
  6. Step 6: Final answer
    x = 150,748.77

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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.