Home / 212,520.12-318,705.13-62,720.34

Finding the Fourth Proportional to 212,520.12, 318,705.13 and 62,720.34

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Solution

The fourth proportional to 212,520.12, 318,705.13 and 62,720.34 is: 94,058.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,520.12 : 318,705.13 = 62,720.34 : x
  2. Step 2: Convert to fraction form
    212,520.12/318,705.13 = 62,720.34/x
  3. Step 3: Cross multiply
    212,520.12x = 318,705.13 × 62,720.34
  4. Step 4: Simplify right side
    212,520.12x = 19,989,294,113.34
  5. Step 5: Solve for x
    x = 19,989,294,113.34/212,520.12
  6. Step 6: Final answer
    x = 94,058.36

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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.