Home / 106,478.13-159,744.20-39,918.45

Finding the Fourth Proportional to 106,478.13, 159,744.20 and 39,918.45

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Solution

The fourth proportional to 106,478.13, 159,744.20 and 39,918.45 is: 59,887.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,478.13 : 159,744.20 = 39,918.45 : x
  2. Step 2: Convert to fraction form
    106,478.13/159,744.20 = 39,918.45/x
  3. Step 3: Cross multiply
    106,478.13x = 159,744.20 × 39,918.45
  4. Step 4: Simplify right side
    106,478.13x = 6,376,740,860.49
  5. Step 5: Solve for x
    x = 6,376,740,860.49/106,478.13
  6. Step 6: Final answer
    x = 59,887.80

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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.