Home / 105,211.25-157,892.31-71,392.94

Finding the Fourth Proportional to 105,211.25, 157,892.31 and 71,392.94

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Solution

The fourth proportional to 105,211.25, 157,892.31 and 71,392.94 is: 107,140.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,211.25 : 157,892.31 = 71,392.94 : x
  2. Step 2: Convert to fraction form
    105,211.25/157,892.31 = 71,392.94/x
  3. Step 3: Cross multiply
    105,211.25x = 157,892.31 × 71,392.94
  4. Step 4: Simplify right side
    105,211.25x = 11,272,396,214.29
  5. Step 5: Solve for x
    x = 11,272,396,214.29/105,211.25
  6. Step 6: Final answer
    x = 107,140.60

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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.