Home / 212,141.25-318,363.63-77,205.12

Finding the Fourth Proportional to 212,141.25, 318,363.63 and 77,205.12

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Solution

The fourth proportional to 212,141.25, 318,363.63 and 77,205.12 is: 115,862.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,141.25 : 318,363.63 = 77,205.12 : x
  2. Step 2: Convert to fraction form
    212,141.25/318,363.63 = 77,205.12/x
  3. Step 3: Cross multiply
    212,141.25x = 318,363.63 × 77,205.12
  4. Step 4: Simplify right side
    212,141.25x = 24,579,302,257.79
  5. Step 5: Solve for x
    x = 24,579,302,257.79/212,141.25
  6. Step 6: Final answer
    x = 115,862.91

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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.