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Finding the Fourth Proportional to 136,000.73, 187,620.63 and 90,634.52

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Solution

The fourth proportional to 136,000.73, 187,620.63 and 90,634.52 is: 125,035.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,000.73 : 187,620.63 = 90,634.52 : x
  2. Step 2: Convert to fraction form
    136,000.73/187,620.63 = 90,634.52/x
  3. Step 3: Cross multiply
    136,000.73x = 187,620.63 × 90,634.52
  4. Step 4: Simplify right side
    136,000.73x = 17,004,905,742.15
  5. Step 5: Solve for x
    x = 17,004,905,742.15/136,000.73
  6. Step 6: Final answer
    x = 125,035.40

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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.