Home / 189,775.24-284,432.68-139,388.12

Finding the Fourth Proportional to 189,775.24, 284,432.68 and 139,388.12

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Solution

The fourth proportional to 189,775.24, 284,432.68 and 139,388.12 is: 208,913.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,775.24 : 284,432.68 = 139,388.12 : x
  2. Step 2: Convert to fraction form
    189,775.24/284,432.68 = 139,388.12/x
  3. Step 3: Cross multiply
    189,775.24x = 284,432.68 × 139,388.12
  4. Step 4: Simplify right side
    189,775.24x = 39,646,536,531.76
  5. Step 5: Solve for x
    x = 39,646,536,531.76/189,775.24
  6. Step 6: Final answer
    x = 208,913.11

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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.