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Finding the Fourth Proportional to 137,168.55, 189,187.92 and 118,079.69

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Solution

The fourth proportional to 137,168.55, 189,187.92 and 118,079.69 is: 162,859.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,168.55 : 189,187.92 = 118,079.69 : x
  2. Step 2: Convert to fraction form
    137,168.55/189,187.92 = 118,079.69/x
  3. Step 3: Cross multiply
    137,168.55x = 189,187.92 × 118,079.69
  4. Step 4: Simplify right side
    137,168.55x = 22,339,249,999.41
  5. Step 5: Solve for x
    x = 22,339,249,999.41/137,168.55
  6. Step 6: Final answer
    x = 162,859.85

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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.