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Finding the Fourth Proportional to 220,109.68, 330,068.34 and 77,907.70

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Solution

The fourth proportional to 220,109.68, 330,068.34 and 77,907.70 is: 116,827.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,109.68 : 330,068.34 = 77,907.70 : x
  2. Step 2: Convert to fraction form
    220,109.68/330,068.34 = 77,907.70/x
  3. Step 3: Cross multiply
    220,109.68x = 330,068.34 × 77,907.70
  4. Step 4: Simplify right side
    220,109.68x = 25,714,865,212.22
  5. Step 5: Solve for x
    x = 25,714,865,212.22/220,109.68
  6. Step 6: Final answer
    x = 116,827.51

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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.