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Finding the Fourth Proportional to 160,543.21, 221,553.21 and 91,631.29

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Solution

The fourth proportional to 160,543.21, 221,553.21 and 91,631.29 is: 126,453.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,543.21 : 221,553.21 = 91,631.29 : x
  2. Step 2: Convert to fraction form
    160,543.21/221,553.21 = 91,631.29/x
  3. Step 3: Cross multiply
    160,543.21x = 221,553.21 × 91,631.29
  4. Step 4: Simplify right side
    160,543.21x = 20,301,205,882.06
  5. Step 5: Solve for x
    x = 20,301,205,882.06/160,543.21
  6. Step 6: Final answer
    x = 126,453.22

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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.