Home / 137,405.45-189,712.23-85,801.36

Finding the Fourth Proportional to 137,405.45, 189,712.23 and 85,801.36

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Solution

The fourth proportional to 137,405.45, 189,712.23 and 85,801.36 is: 118,463.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,405.45 : 189,712.23 = 85,801.36 : x
  2. Step 2: Convert to fraction form
    137,405.45/189,712.23 = 85,801.36/x
  3. Step 3: Cross multiply
    137,405.45x = 189,712.23 × 85,801.36
  4. Step 4: Simplify right side
    137,405.45x = 16,277,567,702.66
  5. Step 5: Solve for x
    x = 16,277,567,702.66/137,405.45
  6. Step 6: Final answer
    x = 118,463.77

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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.