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Finding the Fourth Proportional to 138,833.43, 191,446.93 and 118,756.77

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Solution

The fourth proportional to 138,833.43, 191,446.93 and 118,756.77 is: 163,761.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,833.43 : 191,446.93 = 118,756.77 : x
  2. Step 2: Convert to fraction form
    138,833.43/191,446.93 = 118,756.77/x
  3. Step 3: Cross multiply
    138,833.43x = 191,446.93 × 118,756.77
  4. Step 4: Simplify right side
    138,833.43x = 22,735,619,033.22
  5. Step 5: Solve for x
    x = 22,735,619,033.22/138,833.43
  6. Step 6: Final answer
    x = 163,761.85

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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.