Home / 106,845.48-159,920.53-78,754.28

Finding the Fourth Proportional to 106,845.48, 159,920.53 and 78,754.28

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Solution

The fourth proportional to 106,845.48, 159,920.53 and 78,754.28 is: 117,875.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,845.48 : 159,920.53 = 78,754.28 : x
  2. Step 2: Convert to fraction form
    106,845.48/159,920.53 = 78,754.28/x
  3. Step 3: Cross multiply
    106,845.48x = 159,920.53 × 78,754.28
  4. Step 4: Simplify right side
    106,845.48x = 12,594,425,200.88
  5. Step 5: Solve for x
    x = 12,594,425,200.88/106,845.48
  6. Step 6: Final answer
    x = 117,875.13

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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.