Home / 161,449.13-242,323.34-81,543.22

Finding the Fourth Proportional to 161,449.13, 242,323.34 and 81,543.22

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Solution

The fourth proportional to 161,449.13, 242,323.34 and 81,543.22 is: 122,390.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,449.13 : 242,323.34 = 81,543.22 : x
  2. Step 2: Convert to fraction form
    161,449.13/242,323.34 = 81,543.22/x
  3. Step 3: Cross multiply
    161,449.13x = 242,323.34 × 81,543.22
  4. Step 4: Simplify right side
    161,449.13x = 19,759,823,805.42
  5. Step 5: Solve for x
    x = 19,759,823,805.42/161,449.13
  6. Step 6: Final answer
    x = 122,390.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.