Home / 185,511.09-278,243.96-78,937.91

Finding the Fourth Proportional to 185,511.09, 278,243.96 and 78,937.91

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Solution

The fourth proportional to 185,511.09, 278,243.96 and 78,937.91 is: 118,397.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,511.09 : 278,243.96 = 78,937.91 : x
  2. Step 2: Convert to fraction form
    185,511.09/278,243.96 = 78,937.91/x
  3. Step 3: Cross multiply
    185,511.09x = 278,243.96 × 78,937.91
  4. Step 4: Simplify right side
    185,511.09x = 21,963,994,886.61
  5. Step 5: Solve for x
    x = 21,963,994,886.61/185,511.09
  6. Step 6: Final answer
    x = 118,397.21

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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.