Home / 125,636.75-173,419.11-80,436.47

Finding the Fourth Proportional to 125,636.75, 173,419.11 and 80,436.47

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Solution

The fourth proportional to 125,636.75, 173,419.11 and 80,436.47 is: 111,028.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,636.75 : 173,419.11 = 80,436.47 : x
  2. Step 2: Convert to fraction form
    125,636.75/173,419.11 = 80,436.47/x
  3. Step 3: Cross multiply
    125,636.75x = 173,419.11 × 80,436.47
  4. Step 4: Simplify right side
    125,636.75x = 13,949,221,038.94
  5. Step 5: Solve for x
    x = 13,949,221,038.94/125,636.75
  6. Step 6: Final answer
    x = 111,028.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.