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Finding the Fourth Proportional to 150,784.60, 208,068.02 and 87,121.03

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Solution

The fourth proportional to 150,784.60, 208,068.02 and 87,121.03 is: 120,218.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,784.60 : 208,068.02 = 87,121.03 : x
  2. Step 2: Convert to fraction form
    150,784.60/208,068.02 = 87,121.03/x
  3. Step 3: Cross multiply
    150,784.60x = 208,068.02 × 87,121.03
  4. Step 4: Simplify right side
    150,784.60x = 18,127,100,212.46
  5. Step 5: Solve for x
    x = 18,127,100,212.46/150,784.60
  6. Step 6: Final answer
    x = 120,218.51

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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.