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Finding the Fourth Proportional to 136,004.80, 203,618.40 and 83,516.80

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Solution

The fourth proportional to 136,004.80, 203,618.40 and 83,516.80 is: 125,036.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,004.80 : 203,618.40 = 83,516.80 : x
  2. Step 2: Convert to fraction form
    136,004.80/203,618.40 = 83,516.80/x
  3. Step 3: Cross multiply
    136,004.80x = 203,618.40 × 83,516.80
  4. Step 4: Simplify right side
    136,004.80x = 17,005,557,189.12
  5. Step 5: Solve for x
    x = 17,005,557,189.12/136,004.80
  6. Step 6: Final answer
    x = 125,036.45

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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.