Home / 115,936.90-173,862.15-80,772.10

Finding the Fourth Proportional to 115,936.90, 173,862.15 and 80,772.10

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Solution

The fourth proportional to 115,936.90, 173,862.15 and 80,772.10 is: 121,128.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,936.90 : 173,862.15 = 80,772.10 : x
  2. Step 2: Convert to fraction form
    115,936.90/173,862.15 = 80,772.10/x
  3. Step 3: Cross multiply
    115,936.90x = 173,862.15 × 80,772.10
  4. Step 4: Simplify right side
    115,936.90x = 14,043,210,966.02
  5. Step 5: Solve for x
    x = 14,043,210,966.02/115,936.90
  6. Step 6: Final answer
    x = 121,128.05

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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.