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Finding the Fourth Proportional to 136,875.62, 205,314.75 and 48,129.86

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Solution

The fourth proportional to 136,875.62, 205,314.75 and 48,129.86 is: 72,195.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,875.62 : 205,314.75 = 48,129.86 : x
  2. Step 2: Convert to fraction form
    136,875.62/205,314.75 = 48,129.86/x
  3. Step 3: Cross multiply
    136,875.62x = 205,314.75 × 48,129.86
  4. Step 4: Simplify right side
    136,875.62x = 9,881,770,686.72
  5. Step 5: Solve for x
    x = 9,881,770,686.72/136,875.62
  6. Step 6: Final answer
    x = 72,195.26

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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.