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Finding the Fourth Proportional to 125,343.72, 172,981.98 and 82,828.44

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Solution

The fourth proportional to 125,343.72, 172,981.98 and 82,828.44 is: 114,308.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,343.72 : 172,981.98 = 82,828.44 : x
  2. Step 2: Convert to fraction form
    125,343.72/172,981.98 = 82,828.44/x
  3. Step 3: Cross multiply
    125,343.72x = 172,981.98 × 82,828.44
  4. Step 4: Simplify right side
    125,343.72x = 14,327,827,551.51
  5. Step 5: Solve for x
    x = 14,327,827,551.51/125,343.72
  6. Step 6: Final answer
    x = 114,308.30

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.