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Finding the Fourth Proportional to 161,999.80, 242,999.70 and 112,136.20

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Solution

The fourth proportional to 161,999.80, 242,999.70 and 112,136.20 is: 168,204.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,999.80 : 242,999.70 = 112,136.20 : x
  2. Step 2: Convert to fraction form
    161,999.80/242,999.70 = 112,136.20/x
  3. Step 3: Cross multiply
    161,999.80x = 242,999.70 × 112,136.20
  4. Step 4: Simplify right side
    161,999.80x = 27,249,062,959.14
  5. Step 5: Solve for x
    x = 27,249,062,959.14/161,999.80
  6. Step 6: Final answer
    x = 168,204.30

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1.5x scale

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.