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Finding the Fourth Proportional to 136,710.95, 205,157.54 and 52,540.61

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Solution

The fourth proportional to 136,710.95, 205,157.54 and 52,540.61 is: 78,845.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,710.95 : 205,157.54 = 52,540.61 : x
  2. Step 2: Convert to fraction form
    136,710.95/205,157.54 = 52,540.61/x
  3. Step 3: Cross multiply
    136,710.95x = 205,157.54 × 52,540.61
  4. Step 4: Simplify right side
    136,710.95x = 10,779,101,009.21
  5. Step 5: Solve for x
    x = 10,779,101,009.21/136,710.95
  6. Step 6: Final answer
    x = 78,845.93

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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.