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Finding the Fourth Proportional to 186,720, 279,480.60 and 97,846.80

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Solution

The fourth proportional to 186,720, 279,480.60 and 97,846.80 is: 146,456.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,720 : 279,480.60 = 97,846.80 : x
  2. Step 2: Convert to fraction form
    186,720/279,480.60 = 97,846.80/x
  3. Step 3: Cross multiply
    186,720x = 279,480.60 × 97,846.80
  4. Step 4: Simplify right side
    186,720x = 27,346,282,372.08
  5. Step 5: Solve for x
    x = 27,346,282,372.08/186,720
  6. Step 6: Final answer
    x = 146,456.10

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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.