Home / 212,291.18-318,368.42-70,103.37

Finding the Fourth Proportional to 212,291.18, 318,368.42 and 70,103.37

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Solution

The fourth proportional to 212,291.18, 318,368.42 and 70,103.37 is: 105,132.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,291.18 : 318,368.42 = 70,103.37 : x
  2. Step 2: Convert to fraction form
    212,291.18/318,368.42 = 70,103.37/x
  3. Step 3: Cross multiply
    212,291.18x = 318,368.42 × 70,103.37
  4. Step 4: Simplify right side
    212,291.18x = 22,318,700,644.16
  5. Step 5: Solve for x
    x = 22,318,700,644.16/212,291.18
  6. Step 6: Final answer
    x = 105,132.49

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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.