Home / 119,084.46-164,344.86-78,728.10

Finding the Fourth Proportional to 119,084.46, 164,344.86 and 78,728.10

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Solution

The fourth proportional to 119,084.46, 164,344.86 and 78,728.10 is: 108,650.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,084.46 : 164,344.86 = 78,728.10 : x
  2. Step 2: Convert to fraction form
    119,084.46/164,344.86 = 78,728.10/x
  3. Step 3: Cross multiply
    119,084.46x = 164,344.86 × 78,728.10
  4. Step 4: Simplify right side
    119,084.46x = 12,938,558,572.57
  5. Step 5: Solve for x
    x = 12,938,558,572.57/119,084.46
  6. Step 6: Final answer
    x = 108,650.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.