Home / 212,035.30-318,053.13-99,633.07

Finding the Fourth Proportional to 212,035.30, 318,053.13 and 99,633.07

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Solution

The fourth proportional to 212,035.30, 318,053.13 and 99,633.07 is: 149,449.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,035.30 : 318,053.13 = 99,633.07 : x
  2. Step 2: Convert to fraction form
    212,035.30/318,053.13 = 99,633.07/x
  3. Step 3: Cross multiply
    212,035.30x = 318,053.13 × 99,633.07
  4. Step 4: Simplify right side
    212,035.30x = 31,688,609,765.01
  5. Step 5: Solve for x
    x = 31,688,609,765.01/212,035.30
  6. Step 6: Final answer
    x = 149,449.69

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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.