Home / 78,227.04-117,340.32-67,665.66

Finding the Fourth Proportional to 78,227.04, 117,340.32 and 67,665.66

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Solution

The fourth proportional to 78,227.04, 117,340.32 and 67,665.66 is: 101,498.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,227.04 : 117,340.32 = 67,665.66 : x
  2. Step 2: Convert to fraction form
    78,227.04/117,340.32 = 67,665.66/x
  3. Step 3: Cross multiply
    78,227.04x = 117,340.32 × 67,665.66
  4. Step 4: Simplify right side
    78,227.04x = 7,939,910,197.41
  5. Step 5: Solve for x
    x = 7,939,910,197.41/78,227.04
  6. Step 6: Final answer
    x = 101,498.28

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1.5x scale

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.