Home / 212,535.40-318,803.78-86,177.84

Finding the Fourth Proportional to 212,535.40, 318,803.78 and 86,177.84

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Solution

The fourth proportional to 212,535.40, 318,803.78 and 86,177.84 is: 129,267.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,535.40 : 318,803.78 = 86,177.84 : x
  2. Step 2: Convert to fraction form
    212,535.40/318,803.78 = 86,177.84/x
  3. Step 3: Cross multiply
    212,535.40x = 318,803.78 × 86,177.84
  4. Step 4: Simplify right side
    212,535.40x = 27,473,821,144.24
  5. Step 5: Solve for x
    x = 27,473,821,144.24/212,535.40
  6. Step 6: Final answer
    x = 129,267.04

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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.