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Finding the Fourth Proportional to 109,448.79, 151,026.45 and 61,699.29

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Solution

The fourth proportional to 109,448.79, 151,026.45 and 61,699.29 is: 85,137.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,448.79 : 151,026.45 = 61,699.29 : x
  2. Step 2: Convert to fraction form
    109,448.79/151,026.45 = 61,699.29/x
  3. Step 3: Cross multiply
    109,448.79x = 151,026.45 × 61,699.29
  4. Step 4: Simplify right side
    109,448.79x = 9,318,224,736.22
  5. Step 5: Solve for x
    x = 9,318,224,736.22/109,448.79
  6. Step 6: Final answer
    x = 85,137.76

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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.