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Finding the Fourth Proportional to 161,780.70, 242,671.05 and 91,796.70

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Solution

The fourth proportional to 161,780.70, 242,671.05 and 91,796.70 is: 137,695.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,780.70 : 242,671.05 = 91,796.70 : x
  2. Step 2: Convert to fraction form
    161,780.70/242,671.05 = 91,796.70/x
  3. Step 3: Cross multiply
    161,780.70x = 242,671.05 × 91,796.70
  4. Step 4: Simplify right side
    161,780.70x = 22,276,401,575.54
  5. Step 5: Solve for x
    x = 22,276,401,575.54/161,780.70
  6. Step 6: Final answer
    x = 137,695.05

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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.