Home / 115,784.15-173,395.91-80,145.60

Finding the Fourth Proportional to 115,784.15, 173,395.91 and 80,145.60

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Solution

The fourth proportional to 115,784.15, 173,395.91 and 80,145.60 is: 120,024.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,784.15 : 173,395.91 = 80,145.60 : x
  2. Step 2: Convert to fraction form
    115,784.15/173,395.91 = 80,145.60/x
  3. Step 3: Cross multiply
    115,784.15x = 173,395.91 × 80,145.60
  4. Step 4: Simplify right side
    115,784.15x = 13,896,918,843.77
  5. Step 5: Solve for x
    x = 13,896,918,843.77/115,784.15
  6. Step 6: Final answer
    x = 120,024.37

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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.