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Finding the Fourth Proportional to 151,055.78, 208,452.80 and 83,072.75

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Solution

The fourth proportional to 151,055.78, 208,452.80 and 83,072.75 is: 114,638.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,055.78 : 208,452.80 = 83,072.75 : x
  2. Step 2: Convert to fraction form
    151,055.78/208,452.80 = 83,072.75/x
  3. Step 3: Cross multiply
    151,055.78x = 208,452.80 × 83,072.75
  4. Step 4: Simplify right side
    151,055.78x = 17,316,745,883.57
  5. Step 5: Solve for x
    x = 17,316,745,883.57/151,055.78
  6. Step 6: Final answer
    x = 114,638.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.