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Finding the Fourth Proportional to 161,753.99, 223,217.49 and 90,132.49

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Solution

The fourth proportional to 161,753.99, 223,217.49 and 90,132.49 is: 124,381.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,753.99 : 223,217.49 = 90,132.49 : x
  2. Step 2: Convert to fraction form
    161,753.99/223,217.49 = 90,132.49/x
  3. Step 3: Cross multiply
    161,753.99x = 223,217.49 × 90,132.49
  4. Step 4: Simplify right side
    161,753.99x = 20,119,148,185.25
  5. Step 5: Solve for x
    x = 20,119,148,185.25/161,753.99
  6. Step 6: Final answer
    x = 124,381.16

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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.