Home / 115,784.55-173,665.08-78,583.68

Finding the Fourth Proportional to 115,784.55, 173,665.08 and 78,583.68

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Solution

The fourth proportional to 115,784.55, 173,665.08 and 78,583.68 is: 117,867.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,784.55 : 173,665.08 = 78,583.68 : x
  2. Step 2: Convert to fraction form
    115,784.55/173,665.08 = 78,583.68/x
  3. Step 3: Cross multiply
    115,784.55x = 173,665.08 × 78,583.68
  4. Step 4: Simplify right side
    115,784.55x = 13,647,241,073.89
  5. Step 5: Solve for x
    x = 13,647,241,073.89/115,784.55
  6. Step 6: Final answer
    x = 117,867.55

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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.