Home / 140,346.13-193,620.31-103,640.29

Finding the Fourth Proportional to 140,346.13, 193,620.31 and 103,640.29

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Solution

The fourth proportional to 140,346.13, 193,620.31 and 103,640.29 is: 142,981.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,346.13 : 193,620.31 = 103,640.29 : x
  2. Step 2: Convert to fraction form
    140,346.13/193,620.31 = 103,640.29/x
  3. Step 3: Cross multiply
    140,346.13x = 193,620.31 × 103,640.29
  4. Step 4: Simplify right side
    140,346.13x = 20,066,865,078.29
  5. Step 5: Solve for x
    x = 20,066,865,078.29/140,346.13
  6. Step 6: Final answer
    x = 142,981.25

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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.