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Finding the Fourth Proportional to 186,721, 279,482.10 and 97,847.80

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Solution

The fourth proportional to 186,721, 279,482.10 and 97,847.80 is: 146,457.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,721 : 279,482.10 = 97,847.80 : x
  2. Step 2: Convert to fraction form
    186,721/279,482.10 = 97,847.80/x
  3. Step 3: Cross multiply
    186,721x = 279,482.10 × 97,847.80
  4. Step 4: Simplify right side
    186,721x = 27,346,708,624.38
  5. Step 5: Solve for x
    x = 27,346,708,624.38/186,721
  6. Step 6: Final answer
    x = 146,457.60

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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.