Home / 100,622.19-138,828.31-60,321.25

Finding the Fourth Proportional to 100,622.19, 138,828.31 and 60,321.25

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Solution

The fourth proportional to 100,622.19, 138,828.31 and 60,321.25 is: 83,225.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,622.19 : 138,828.31 = 60,321.25 : x
  2. Step 2: Convert to fraction form
    100,622.19/138,828.31 = 60,321.25/x
  3. Step 3: Cross multiply
    100,622.19x = 138,828.31 × 60,321.25
  4. Step 4: Simplify right side
    100,622.19x = 8,374,296,696.71
  5. Step 5: Solve for x
    x = 8,374,296,696.71/100,622.19
  6. Step 6: Final answer
    x = 83,225.15

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1.5x scale

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.