Home / 71,346.12-106,980.96-68,278.86

Finding the Fourth Proportional to 71,346.12, 106,980.96 and 68,278.86

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Solution

The fourth proportional to 71,346.12, 106,980.96 and 68,278.86 is: 102,381.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,346.12 : 106,980.96 = 68,278.86 : x
  2. Step 2: Convert to fraction form
    71,346.12/106,980.96 = 68,278.86/x
  3. Step 3: Cross multiply
    71,346.12x = 106,980.96 × 68,278.86
  4. Step 4: Simplify right side
    71,346.12x = 7,304,537,990.51
  5. Step 5: Solve for x
    x = 7,304,537,990.51/71,346.12
  6. Step 6: Final answer
    x = 102,381.71

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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.