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Finding the Fourth Proportional to 161,239.80, 241,859.70 and 123,987.90

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Solution

The fourth proportional to 161,239.80, 241,859.70 and 123,987.90 is: 185,981.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,239.80 : 241,859.70 = 123,987.90 : x
  2. Step 2: Convert to fraction form
    161,239.80/241,859.70 = 123,987.90/x
  3. Step 3: Cross multiply
    161,239.80x = 241,859.70 × 123,987.90
  4. Step 4: Simplify right side
    161,239.80x = 29,987,676,297.63
  5. Step 5: Solve for x
    x = 29,987,676,297.63/161,239.80
  6. Step 6: Final answer
    x = 185,981.85

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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.