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Finding the Fourth Proportional to 186,301.80, 279,638.10 and 86,484.60

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Solution

The fourth proportional to 186,301.80, 279,638.10 and 86,484.60 is: 129,812.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,301.80 : 279,638.10 = 86,484.60 : x
  2. Step 2: Convert to fraction form
    186,301.80/279,638.10 = 86,484.60/x
  3. Step 3: Cross multiply
    186,301.80x = 279,638.10 × 86,484.60
  4. Step 4: Simplify right side
    186,301.80x = 24,184,389,223.26
  5. Step 5: Solve for x
    x = 24,184,389,223.26/186,301.80
  6. Step 6: Final answer
    x = 129,812.97

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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.