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Finding the Fourth Proportional to 161,723.40, 242,001.90 and 109,235.40

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Solution

The fourth proportional to 161,723.40, 242,001.90 and 109,235.40 is: 163,459.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,723.40 : 242,001.90 = 109,235.40 : x
  2. Step 2: Convert to fraction form
    161,723.40/242,001.90 = 109,235.40/x
  3. Step 3: Cross multiply
    161,723.40x = 242,001.90 × 109,235.40
  4. Step 4: Simplify right side
    161,723.40x = 26,435,174,347.26
  5. Step 5: Solve for x
    x = 26,435,174,347.26/161,723.40
  6. Step 6: Final answer
    x = 163,459.18

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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.