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Finding the Fourth Proportional to 125,970, 173,838.60 and 69,381.38

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Solution

The fourth proportional to 125,970, 173,838.60 and 69,381.38 is: 95,746.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,970 : 173,838.60 = 69,381.38 : x
  2. Step 2: Convert to fraction form
    125,970/173,838.60 = 69,381.38/x
  3. Step 3: Cross multiply
    125,970x = 173,838.60 × 69,381.38
  4. Step 4: Simplify right side
    125,970x = 12,061,161,096.08
  5. Step 5: Solve for x
    x = 12,061,161,096.08/125,970
  6. Step 6: Final answer
    x = 95,746.30

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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.