Home / 98,634.06-135,955.07-77,085.75

Finding the Fourth Proportional to 98,634.06, 135,955.07 and 77,085.75

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Solution

The fourth proportional to 98,634.06, 135,955.07 and 77,085.75 is: 106,253.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,634.06 : 135,955.07 = 77,085.75 : x
  2. Step 2: Convert to fraction form
    98,634.06/135,955.07 = 77,085.75/x
  3. Step 3: Cross multiply
    98,634.06x = 135,955.07 × 77,085.75
  4. Step 4: Simplify right side
    98,634.06x = 10,480,198,151.82
  5. Step 5: Solve for x
    x = 10,480,198,151.82/98,634.06
  6. Step 6: Final answer
    x = 106,253.34

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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.