Home / 102,074.22-140,813.37-66,275.46

Finding the Fourth Proportional to 102,074.22, 140,813.37 and 66,275.46

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Solution

The fourth proportional to 102,074.22, 140,813.37 and 66,275.46 is: 91,428.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,074.22 : 140,813.37 = 66,275.46 : x
  2. Step 2: Convert to fraction form
    102,074.22/140,813.37 = 66,275.46/x
  3. Step 3: Cross multiply
    102,074.22x = 140,813.37 × 66,275.46
  4. Step 4: Simplify right side
    102,074.22x = 9,332,470,870.90
  5. Step 5: Solve for x
    x = 9,332,470,870.90/102,074.22
  6. Step 6: Final answer
    x = 91,428.28

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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.