Home / 212,035.78-318,053.88-99,633.58

Finding the Fourth Proportional to 212,035.78, 318,053.88 and 99,633.58

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Solution

The fourth proportional to 212,035.78, 318,053.88 and 99,633.58 is: 149,450.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,035.78 : 318,053.88 = 99,633.58 : x
  2. Step 2: Convert to fraction form
    212,035.78/318,053.88 = 99,633.58/x
  3. Step 3: Cross multiply
    212,035.78x = 318,053.88 × 99,633.58
  4. Step 4: Simplify right side
    212,035.78x = 31,688,846,697.29
  5. Step 5: Solve for x
    x = 31,688,846,697.29/212,035.78
  6. Step 6: Final answer
    x = 149,450.47

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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.