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Finding the Fourth Proportional to 161,860.80, 242,718.30 and 61,987.80

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Solution

The fourth proportional to 161,860.80, 242,718.30 and 61,987.80 is: 92,953.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,860.80 : 242,718.30 = 61,987.80 : x
  2. Step 2: Convert to fraction form
    161,860.80/242,718.30 = 61,987.80/x
  3. Step 3: Cross multiply
    161,860.80x = 242,718.30 × 61,987.80
  4. Step 4: Simplify right side
    161,860.80x = 15,045,573,436.74
  5. Step 5: Solve for x
    x = 15,045,573,436.74/161,860.80
  6. Step 6: Final answer
    x = 92,953.78

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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.