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Finding the Fourth Proportional to 125,722.56, 173,579.04 and 78,045.96

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Solution

The fourth proportional to 125,722.56, 173,579.04 and 78,045.96 is: 107,754.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,722.56 : 173,579.04 = 78,045.96 : x
  2. Step 2: Convert to fraction form
    125,722.56/173,579.04 = 78,045.96/x
  3. Step 3: Cross multiply
    125,722.56x = 173,579.04 × 78,045.96
  4. Step 4: Simplify right side
    125,722.56x = 13,547,142,812.68
  5. Step 5: Solve for x
    x = 13,547,142,812.68/125,722.56
  6. Step 6: Final answer
    x = 107,754.27

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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.