Home / 100,384.22-138,555.40-68,173.34

Finding the Fourth Proportional to 100,384.22, 138,555.40 and 68,173.34

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Solution

The fourth proportional to 100,384.22, 138,555.40 and 68,173.34 is: 94,096.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,384.22 : 138,555.40 = 68,173.34 : x
  2. Step 2: Convert to fraction form
    100,384.22/138,555.40 = 68,173.34/x
  3. Step 3: Cross multiply
    100,384.22x = 138,555.40 × 68,173.34
  4. Step 4: Simplify right side
    100,384.22x = 9,445,784,393.04
  5. Step 5: Solve for x
    x = 9,445,784,393.04/100,384.22
  6. Step 6: Final answer
    x = 94,096.31

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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.