Home / 212,145.51-318,008.05-99,624.30

Finding the Fourth Proportional to 212,145.51, 318,008.05 and 99,624.30

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Solution

The fourth proportional to 212,145.51, 318,008.05 and 99,624.30 is: 149,337.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,145.51 : 318,008.05 = 99,624.30 : x
  2. Step 2: Convert to fraction form
    212,145.51/318,008.05 = 99,624.30/x
  3. Step 3: Cross multiply
    212,145.51x = 318,008.05 × 99,624.30
  4. Step 4: Simplify right side
    212,145.51x = 31,681,329,375.62
  5. Step 5: Solve for x
    x = 31,681,329,375.62/212,145.51
  6. Step 6: Final answer
    x = 149,337.73

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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.