Home / 158,040.21-217,918.13-100,588.53

Finding the Fourth Proportional to 158,040.21, 217,918.13 and 100,588.53

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Solution

The fourth proportional to 158,040.21, 217,918.13 and 100,588.53 is: 138,699.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,040.21 : 217,918.13 = 100,588.53 : x
  2. Step 2: Convert to fraction form
    158,040.21/217,918.13 = 100,588.53/x
  3. Step 3: Cross multiply
    158,040.21x = 217,918.13 × 100,588.53
  4. Step 4: Simplify right side
    158,040.21x = 21,920,064,608.52
  5. Step 5: Solve for x
    x = 21,920,064,608.52/158,040.21
  6. Step 6: Final answer
    x = 138,699.29

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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.