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Finding the Fourth Proportional to 161,740.99, 223,199.59 and 90,119.47

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Solution

The fourth proportional to 161,740.99, 223,199.59 and 90,119.47 is: 124,363.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,740.99 : 223,199.59 = 90,119.47 : x
  2. Step 2: Convert to fraction form
    161,740.99/223,199.59 = 90,119.47/x
  3. Step 3: Cross multiply
    161,740.99x = 223,199.59 × 90,119.47
  4. Step 4: Simplify right side
    161,740.99x = 20,114,628,755.02
  5. Step 5: Solve for x
    x = 20,114,628,755.02/161,740.99
  6. Step 6: Final answer
    x = 124,363.21

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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.