Home / 212,726.10-318,998.91-79,513.20

Finding the Fourth Proportional to 212,726.10, 318,998.91 and 79,513.20

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Solution

The fourth proportional to 212,726.10, 318,998.91 and 79,513.20 is: 119,236.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,726.10 : 318,998.91 = 79,513.20 : x
  2. Step 2: Convert to fraction form
    212,726.10/318,998.91 = 79,513.20/x
  3. Step 3: Cross multiply
    212,726.10x = 318,998.91 × 79,513.20
  4. Step 4: Simplify right side
    212,726.10x = 25,364,624,130.61
  5. Step 5: Solve for x
    x = 25,364,624,130.61/212,726.10
  6. Step 6: Final answer
    x = 119,236.07

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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.