Home / 161,100.88-222,400.02-100,705.12

Finding the Fourth Proportional to 161,100.88, 222,400.02 and 100,705.12

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Solution

The fourth proportional to 161,100.88, 222,400.02 and 100,705.12 is: 139,023.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,100.88 : 222,400.02 = 100,705.12 : x
  2. Step 2: Convert to fraction form
    161,100.88/222,400.02 = 100,705.12/x
  3. Step 3: Cross multiply
    161,100.88x = 222,400.02 × 100,705.12
  4. Step 4: Simplify right side
    161,100.88x = 22,396,820,702.10
  5. Step 5: Solve for x
    x = 22,396,820,702.10/161,100.88
  6. Step 6: Final answer
    x = 139,023.58

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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.