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Finding the Fourth Proportional to 105,160.08, 157,679.40 and 71,920.44

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Solution

The fourth proportional to 105,160.08, 157,679.40 and 71,920.44 is: 107,839.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,160.08 : 157,679.40 = 71,920.44 : x
  2. Step 2: Convert to fraction form
    105,160.08/157,679.40 = 71,920.44/x
  3. Step 3: Cross multiply
    105,160.08x = 157,679.40 × 71,920.44
  4. Step 4: Simplify right side
    105,160.08x = 11,340,371,826.94
  5. Step 5: Solve for x
    x = 11,340,371,826.94/105,160.08
  6. Step 6: Final answer
    x = 107,839.13

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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.