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Finding the Fourth Proportional to 187,424.51, 258,773.96 and 139,039.07

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Solution

The fourth proportional to 187,424.51, 258,773.96 and 139,039.07 is: 191,968.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,424.51 : 258,773.96 = 139,039.07 : x
  2. Step 2: Convert to fraction form
    187,424.51/258,773.96 = 139,039.07/x
  3. Step 3: Cross multiply
    187,424.51x = 258,773.96 × 139,039.07
  4. Step 4: Simplify right side
    187,424.51x = 35,979,690,043.42
  5. Step 5: Solve for x
    x = 35,979,690,043.42/187,424.51
  6. Step 6: Final answer
    x = 191,968.97

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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.