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Finding the Fourth Proportional to 189,152.70, 261,032.50 and 104,272.80

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Solution

The fourth proportional to 189,152.70, 261,032.50 and 104,272.80 is: 143,897.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,152.70 : 261,032.50 = 104,272.80 : x
  2. Step 2: Convert to fraction form
    189,152.70/261,032.50 = 104,272.80/x
  3. Step 3: Cross multiply
    189,152.70x = 261,032.50 × 104,272.80
  4. Step 4: Simplify right side
    189,152.70x = 27,218,589,666
  5. Step 5: Solve for x
    x = 27,218,589,666/189,152.70
  6. Step 6: Final answer
    x = 143,897.44

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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.