Home / 186,311.20-257,110.42-101,428.87

Finding the Fourth Proportional to 186,311.20, 257,110.42 and 101,428.87

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Solution

The fourth proportional to 186,311.20, 257,110.42 and 101,428.87 is: 139,972.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,311.20 : 257,110.42 = 101,428.87 : x
  2. Step 2: Convert to fraction form
    186,311.20/257,110.42 = 101,428.87/x
  3. Step 3: Cross multiply
    186,311.20x = 257,110.42 × 101,428.87
  4. Step 4: Simplify right side
    186,311.20x = 26,078,418,469.48
  5. Step 5: Solve for x
    x = 26,078,418,469.48/186,311.20
  6. Step 6: Final answer
    x = 139,972.36

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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.