Home / 100,066.37-138,132.67-67,845.12

Finding the Fourth Proportional to 100,066.37, 138,132.67 and 67,845.12

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Solution

The fourth proportional to 100,066.37, 138,132.67 and 67,845.12 is: 93,654.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,066.37 : 138,132.67 = 67,845.12 : x
  2. Step 2: Convert to fraction form
    100,066.37/138,132.67 = 67,845.12/x
  3. Step 3: Cross multiply
    100,066.37x = 138,132.67 × 67,845.12
  4. Step 4: Simplify right side
    100,066.37x = 9,371,627,572.07
  5. Step 5: Solve for x
    x = 9,371,627,572.07/100,066.37
  6. Step 6: Final answer
    x = 93,654.12

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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.