Home / 99,759.13-149,641.27-28,678.89

Finding the Fourth Proportional to 99,759.13, 149,641.27 and 28,678.89

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Solution

The fourth proportional to 99,759.13, 149,641.27 and 28,678.89 is: 43,019.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,759.13 : 149,641.27 = 28,678.89 : x
  2. Step 2: Convert to fraction form
    99,759.13/149,641.27 = 28,678.89/x
  3. Step 3: Cross multiply
    99,759.13x = 149,641.27 × 28,678.89
  4. Step 4: Simplify right side
    99,759.13x = 4,291,546,172.57
  5. Step 5: Solve for x
    x = 4,291,546,172.57/99,759.13
  6. Step 6: Final answer
    x = 43,019.08

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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.