Home / 186,350.40-279,136.80-139,538.88

Finding the Fourth Proportional to 186,350.40, 279,136.80 and 139,538.88

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Solution

The fourth proportional to 186,350.40, 279,136.80 and 139,538.88 is: 209,017.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,350.40 : 279,136.80 = 139,538.88 : x
  2. Step 2: Convert to fraction form
    186,350.40/279,136.80 = 139,538.88/x
  3. Step 3: Cross multiply
    186,350.40x = 279,136.80 × 139,538.88
  4. Step 4: Simplify right side
    186,350.40x = 38,950,436,438.78
  5. Step 5: Solve for x
    x = 38,950,436,438.78/186,350.40
  6. Step 6: Final answer
    x = 209,017.19

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1.5x scale

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.