Home / 161,200.56-222,387.75-100,666.12

Finding the Fourth Proportional to 161,200.56, 222,387.75 and 100,666.12

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Solution

The fourth proportional to 161,200.56, 222,387.75 and 100,666.12 is: 138,876.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,200.56 : 222,387.75 = 100,666.12 : x
  2. Step 2: Convert to fraction form
    161,200.56/222,387.75 = 100,666.12/x
  3. Step 3: Cross multiply
    161,200.56x = 222,387.75 × 100,666.12
  4. Step 4: Simplify right side
    161,200.56x = 22,386,911,928.03
  5. Step 5: Solve for x
    x = 22,386,911,928.03/161,200.56
  6. Step 6: Final answer
    x = 138,876.14

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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.