Home / 185,217.12-277,819.36-78,532.40

Finding the Fourth Proportional to 185,217.12, 277,819.36 and 78,532.40

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Solution

The fourth proportional to 185,217.12, 277,819.36 and 78,532.40 is: 117,795.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,217.12 : 277,819.36 = 78,532.40 : x
  2. Step 2: Convert to fraction form
    185,217.12/277,819.36 = 78,532.40/x
  3. Step 3: Cross multiply
    185,217.12x = 277,819.36 × 78,532.40
  4. Step 4: Simplify right side
    185,217.12x = 21,817,821,605.48
  5. Step 5: Solve for x
    x = 21,817,821,605.48/185,217.12
  6. Step 6: Final answer
    x = 117,795.92

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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.