Home / 205,518.78-283,621.88-112,389.98

Finding the Fourth Proportional to 205,518.78, 283,621.88 and 112,389.98

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Solution

The fourth proportional to 205,518.78, 283,621.88 and 112,389.98 is: 155,101.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,518.78 : 283,621.88 = 112,389.98 : x
  2. Step 2: Convert to fraction form
    205,518.78/283,621.88 = 112,389.98/x
  3. Step 3: Cross multiply
    205,518.78x = 283,621.88 × 112,389.98
  4. Step 4: Simplify right side
    205,518.78x = 31,876,257,420.76
  5. Step 5: Solve for x
    x = 31,876,257,420.76/205,518.78
  6. Step 6: Final answer
    x = 155,101.44

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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.