Home / 212,095.36-318,143.10-99,693.04

Finding the Fourth Proportional to 212,095.36, 318,143.10 and 99,693.04

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Solution

The fourth proportional to 212,095.36, 318,143.10 and 99,693.04 is: 149,539.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,095.36 : 318,143.10 = 99,693.04 : x
  2. Step 2: Convert to fraction form
    212,095.36/318,143.10 = 99,693.04/x
  3. Step 3: Cross multiply
    212,095.36x = 318,143.10 × 99,693.04
  4. Step 4: Simplify right side
    212,095.36x = 31,716,652,794.02
  5. Step 5: Solve for x
    x = 31,716,652,794.02/212,095.36
  6. Step 6: Final answer
    x = 149,539.59

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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.