Home / 91,139.22-125,491.41-77,680.26

Finding the Fourth Proportional to 91,139.22, 125,491.41 and 77,680.26

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Solution

The fourth proportional to 91,139.22, 125,491.41 and 77,680.26 is: 106,959.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,139.22 : 125,491.41 = 77,680.26 : x
  2. Step 2: Convert to fraction form
    91,139.22/125,491.41 = 77,680.26/x
  3. Step 3: Cross multiply
    91,139.22x = 125,491.41 × 77,680.26
  4. Step 4: Simplify right side
    91,139.22x = 9,748,205,356.57
  5. Step 5: Solve for x
    x = 9,748,205,356.57/91,139.22
  6. Step 6: Final answer
    x = 106,959.50

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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.