Home / 189,511.92-284,314.32-71,190

Finding the Fourth Proportional to 189,511.92, 284,314.32 and 71,190

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Solution

The fourth proportional to 189,511.92, 284,314.32 and 71,190 is: 106,802.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,511.92 : 284,314.32 = 71,190 : x
  2. Step 2: Convert to fraction form
    189,511.92/284,314.32 = 71,190/x
  3. Step 3: Cross multiply
    189,511.92x = 284,314.32 × 71,190
  4. Step 4: Simplify right side
    189,511.92x = 20,240,336,440.80
  5. Step 5: Solve for x
    x = 20,240,336,440.80/189,511.92
  6. Step 6: Final answer
    x = 106,802.45

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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.