Home / 187,428.84-258,649.42-106,853.72

Finding the Fourth Proportional to 187,428.84, 258,649.42 and 106,853.72

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Solution

The fourth proportional to 187,428.84, 258,649.42 and 106,853.72 is: 147,456.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,428.84 : 258,649.42 = 106,853.72 : x
  2. Step 2: Convert to fraction form
    187,428.84/258,649.42 = 106,853.72/x
  3. Step 3: Cross multiply
    187,428.84x = 258,649.42 × 106,853.72
  4. Step 4: Simplify right side
    187,428.84x = 27,637,652,702.84
  5. Step 5: Solve for x
    x = 27,637,652,702.84/187,428.84
  6. Step 6: Final answer
    x = 147,456.78

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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.