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Finding the Fourth Proportional to 125,123.94, 172,669.32 and 68,535.72

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Solution

The fourth proportional to 125,123.94, 172,669.32 and 68,535.72 is: 94,578.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,123.94 : 172,669.32 = 68,535.72 : x
  2. Step 2: Convert to fraction form
    125,123.94/172,669.32 = 68,535.72/x
  3. Step 3: Cross multiply
    125,123.94x = 172,669.32 × 68,535.72
  4. Step 4: Simplify right side
    125,123.94x = 11,834,016,168.11
  5. Step 5: Solve for x
    x = 11,834,016,168.11/125,123.94
  6. Step 6: Final answer
    x = 94,578.35

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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.