Home / 125,057.40-172,579.31-67,696.55

Finding the Fourth Proportional to 125,057.40, 172,579.31 and 67,696.55

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Solution

The fourth proportional to 125,057.40, 172,579.31 and 67,696.55 is: 93,421.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,057.40 : 172,579.31 = 67,696.55 : x
  2. Step 2: Convert to fraction form
    125,057.40/172,579.31 = 67,696.55/x
  3. Step 3: Cross multiply
    125,057.40x = 172,579.31 × 67,696.55
  4. Step 4: Simplify right side
    125,057.40x = 11,683,022,687.00
  5. Step 5: Solve for x
    x = 11,683,022,687.00/125,057.40
  6. Step 6: Final answer
    x = 93,421.28

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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.