Home / 187,128.81-280,903.04-74,887.26

Finding the Fourth Proportional to 187,128.81, 280,903.04 and 74,887.26

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Solution

The fourth proportional to 187,128.81, 280,903.04 and 74,887.26 is: 112,414.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,128.81 : 280,903.04 = 74,887.26 : x
  2. Step 2: Convert to fraction form
    187,128.81/280,903.04 = 74,887.26/x
  3. Step 3: Cross multiply
    187,128.81x = 280,903.04 × 74,887.26
  4. Step 4: Simplify right side
    187,128.81x = 21,036,058,991.27
  5. Step 5: Solve for x
    x = 21,036,058,991.27/187,128.81
  6. Step 6: Final answer
    x = 112,414.86

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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.