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Finding the Fourth Proportional to 161,410.40, 242,042.70 and 72,618.20

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Solution

The fourth proportional to 161,410.40, 242,042.70 and 72,618.20 is: 108,894.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,410.40 : 242,042.70 = 72,618.20 : x
  2. Step 2: Convert to fraction form
    161,410.40/242,042.70 = 72,618.20/x
  3. Step 3: Cross multiply
    161,410.40x = 242,042.70 × 72,618.20
  4. Step 4: Simplify right side
    161,410.40x = 17,576,705,197.14
  5. Step 5: Solve for x
    x = 17,576,705,197.14/161,410.40
  6. Step 6: Final answer
    x = 108,894.50

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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.