Home / 98,645.78-136,144.50-55,634.11

Finding the Fourth Proportional to 98,645.78, 136,144.50 and 55,634.11

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Solution

The fourth proportional to 98,645.78, 136,144.50 and 55,634.11 is: 76,782.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,645.78 : 136,144.50 = 55,634.11 : x
  2. Step 2: Convert to fraction form
    98,645.78/136,144.50 = 55,634.11/x
  3. Step 3: Cross multiply
    98,645.78x = 136,144.50 × 55,634.11
  4. Step 4: Simplify right side
    98,645.78x = 7,574,277,748.53
  5. Step 5: Solve for x
    x = 7,574,277,748.53/98,645.78
  6. Step 6: Final answer
    x = 76,782.59

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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.