Home / 137,740.40-206,587.92-128,774.24

Finding the Fourth Proportional to 137,740.40, 206,587.92 and 128,774.24

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Solution

The fourth proportional to 137,740.40, 206,587.92 and 128,774.24 is: 193,140.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,740.40 : 206,587.92 = 128,774.24 : x
  2. Step 2: Convert to fraction form
    137,740.40/206,587.92 = 128,774.24/x
  3. Step 3: Cross multiply
    137,740.40x = 206,587.92 × 128,774.24
  4. Step 4: Simplify right side
    137,740.40x = 26,603,202,391.18
  5. Step 5: Solve for x
    x = 26,603,202,391.18/137,740.40
  6. Step 6: Final answer
    x = 193,140.16

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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.