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Finding the Fourth Proportional to 134,460.83, 201,469.20 and 78,142.79

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Solution

The fourth proportional to 134,460.83, 201,469.20 and 78,142.79 is: 117,085.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,460.83 : 201,469.20 = 78,142.79 : x
  2. Step 2: Convert to fraction form
    134,460.83/201,469.20 = 78,142.79/x
  3. Step 3: Cross multiply
    134,460.83x = 201,469.20 × 78,142.79
  4. Step 4: Simplify right side
    134,460.83x = 15,743,365,387.07
  5. Step 5: Solve for x
    x = 15,743,365,387.07/134,460.83
  6. Step 6: Final answer
    x = 117,085.14

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1.5x scale

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.