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Finding the Fourth Proportional to 136,295.90, 188,050.59 and 81,833.93

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Solution

The fourth proportional to 136,295.90, 188,050.59 and 81,833.93 is: 112,908.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,295.90 : 188,050.59 = 81,833.93 : x
  2. Step 2: Convert to fraction form
    136,295.90/188,050.59 = 81,833.93/x
  3. Step 3: Cross multiply
    136,295.90x = 188,050.59 × 81,833.93
  4. Step 4: Simplify right side
    136,295.90x = 15,388,918,818.52
  5. Step 5: Solve for x
    x = 15,388,918,818.52/136,295.90
  6. Step 6: Final answer
    x = 112,908.16

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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.