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Finding the Fourth Proportional to 201,503.79, 302,191.29 and 66,542.72

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Solution

The fourth proportional to 201,503.79, 302,191.29 and 66,542.72 is: 99,792.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,503.79 : 302,191.29 = 66,542.72 : x
  2. Step 2: Convert to fraction form
    201,503.79/302,191.29 = 66,542.72/x
  3. Step 3: Cross multiply
    201,503.79x = 302,191.29 × 66,542.72
  4. Step 4: Simplify right side
    201,503.79x = 20,108,628,885.95
  5. Step 5: Solve for x
    x = 20,108,628,885.95/201,503.79
  6. Step 6: Final answer
    x = 99,792.81

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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.