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Finding the Fourth Proportional to 161,851.80, 242,720.10 and 73,147.80

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Solution

The fourth proportional to 161,851.80, 242,720.10 and 73,147.80 is: 109,695.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,851.80 : 242,720.10 = 73,147.80 : x
  2. Step 2: Convert to fraction form
    161,851.80/242,720.10 = 73,147.80/x
  3. Step 3: Cross multiply
    161,851.80x = 242,720.10 × 73,147.80
  4. Step 4: Simplify right side
    161,851.80x = 17,754,441,330.78
  5. Step 5: Solve for x
    x = 17,754,441,330.78/161,851.80
  6. Step 6: Final answer
    x = 109,695.67

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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.