Home / 78,135.22-117,206.07-22,731.22

Finding the Fourth Proportional to 78,135.22, 117,206.07 and 22,731.22

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Solution

The fourth proportional to 78,135.22, 117,206.07 and 22,731.22 is: 34,097.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,135.22 : 117,206.07 = 22,731.22 : x
  2. Step 2: Convert to fraction form
    78,135.22/117,206.07 = 22,731.22/x
  3. Step 3: Cross multiply
    78,135.22x = 117,206.07 × 22,731.22
  4. Step 4: Simplify right side
    78,135.22x = 2,664,236,962.51
  5. Step 5: Solve for x
    x = 2,664,236,962.51/78,135.22
  6. Step 6: Final answer
    x = 34,097.77

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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.