Home / 125,123.12-172,669.94-68,536.52

Finding the Fourth Proportional to 125,123.12, 172,669.94 and 68,536.52

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Solution

The fourth proportional to 125,123.12, 172,669.94 and 68,536.52 is: 94,580.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,123.12 : 172,669.94 = 68,536.52 : x
  2. Step 2: Convert to fraction form
    125,123.12/172,669.94 = 68,536.52/x
  3. Step 3: Cross multiply
    125,123.12x = 172,669.94 × 68,536.52
  4. Step 4: Simplify right side
    125,123.12x = 11,834,196,796.21
  5. Step 5: Solve for x
    x = 11,834,196,796.21/125,123.12
  6. Step 6: Final answer
    x = 94,580.42

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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.