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Finding the Fourth Proportional to 161,711.70, 242,567.55 and 138,383.70

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Solution

The fourth proportional to 161,711.70, 242,567.55 and 138,383.70 is: 207,575.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,711.70 : 242,567.55 = 138,383.70 : x
  2. Step 2: Convert to fraction form
    161,711.70/242,567.55 = 138,383.70/x
  3. Step 3: Cross multiply
    161,711.70x = 242,567.55 × 138,383.70
  4. Step 4: Simplify right side
    161,711.70x = 33,567,395,068.94
  5. Step 5: Solve for x
    x = 33,567,395,068.94/161,711.70
  6. Step 6: Final answer
    x = 207,575.55

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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.