Home / 125,143.36-172,696.79-67,781.35

Finding the Fourth Proportional to 125,143.36, 172,696.79 and 67,781.35

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Solution

The fourth proportional to 125,143.36, 172,696.79 and 67,781.35 is: 93,537.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,143.36 : 172,696.79 = 67,781.35 : x
  2. Step 2: Convert to fraction form
    125,143.36/172,696.79 = 67,781.35/x
  3. Step 3: Cross multiply
    125,143.36x = 172,696.79 × 67,781.35
  4. Step 4: Simplify right side
    125,143.36x = 11,705,621,566.87
  5. Step 5: Solve for x
    x = 11,705,621,566.87/125,143.36
  6. Step 6: Final answer
    x = 93,537.70

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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.