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Finding the Fourth Proportional to 161,763.80, 242,645.70 and 83,031.80

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Solution

The fourth proportional to 161,763.80, 242,645.70 and 83,031.80 is: 124,547.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,763.80 : 242,645.70 = 83,031.80 : x
  2. Step 2: Convert to fraction form
    161,763.80/242,645.70 = 83,031.80/x
  3. Step 3: Cross multiply
    161,763.80x = 242,645.70 × 83,031.80
  4. Step 4: Simplify right side
    161,763.80x = 20,147,309,233.26
  5. Step 5: Solve for x
    x = 20,147,309,233.26/161,763.80
  6. Step 6: Final answer
    x = 124,547.70

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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.