Home / 142,154.79-196,183.94-81,744.38

Finding the Fourth Proportional to 142,154.79, 196,183.94 and 81,744.38

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Solution

The fourth proportional to 142,154.79, 196,183.94 and 81,744.38 is: 112,813.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,154.79 : 196,183.94 = 81,744.38 : x
  2. Step 2: Convert to fraction form
    142,154.79/196,183.94 = 81,744.38/x
  3. Step 3: Cross multiply
    142,154.79x = 196,183.94 × 81,744.38
  4. Step 4: Simplify right side
    142,154.79x = 16,036,934,541.26
  5. Step 5: Solve for x
    x = 16,036,934,541.26/142,154.79
  6. Step 6: Final answer
    x = 112,813.18

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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.