Home / 86,404.20-129,606.30-83,123.70

Finding the Fourth Proportional to 86,404.20, 129,606.30 and 83,123.70

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Solution

The fourth proportional to 86,404.20, 129,606.30 and 83,123.70 is: 124,685.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,404.20 : 129,606.30 = 83,123.70 : x
  2. Step 2: Convert to fraction form
    86,404.20/129,606.30 = 83,123.70/x
  3. Step 3: Cross multiply
    86,404.20x = 129,606.30 × 83,123.70
  4. Step 4: Simplify right side
    86,404.20x = 10,773,355,199.31
  5. Step 5: Solve for x
    x = 10,773,355,199.31/86,404.20
  6. Step 6: Final answer
    x = 124,685.55

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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.