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Finding the Fourth Proportional to 109,486.31, 164,156.53 and 39,356.51

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Solution

The fourth proportional to 109,486.31, 164,156.53 and 39,356.51 is: 59,008.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,486.31 : 164,156.53 = 39,356.51 : x
  2. Step 2: Convert to fraction form
    109,486.31/164,156.53 = 39,356.51/x
  3. Step 3: Cross multiply
    109,486.31x = 164,156.53 × 39,356.51
  4. Step 4: Simplify right side
    109,486.31x = 6,460,628,114.51
  5. Step 5: Solve for x
    x = 6,460,628,114.51/109,486.31
  6. Step 6: Final answer
    x = 59,008.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.