Home / 140,344.13-193,617.55-103,638.29

Finding the Fourth Proportional to 140,344.13, 193,617.55 and 103,638.29

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Solution

The fourth proportional to 140,344.13, 193,617.55 and 103,638.29 is: 142,978.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,344.13 : 193,617.55 = 103,638.29 : x
  2. Step 2: Convert to fraction form
    140,344.13/193,617.55 = 103,638.29/x
  3. Step 3: Cross multiply
    140,344.13x = 193,617.55 × 103,638.29
  4. Step 4: Simplify right side
    140,344.13x = 20,066,191,795.99
  5. Step 5: Solve for x
    x = 20,066,191,795.99/140,344.13
  6. Step 6: Final answer
    x = 142,978.49

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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.