Home / 158,988.18-219,415.91-91,026.48

Finding the Fourth Proportional to 158,988.18, 219,415.91 and 91,026.48

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Solution

The fourth proportional to 158,988.18, 219,415.91 and 91,026.48 is: 125,623.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,988.18 : 219,415.91 = 91,026.48 : x
  2. Step 2: Convert to fraction form
    158,988.18/219,415.91 = 91,026.48/x
  3. Step 3: Cross multiply
    158,988.18x = 219,415.91 × 91,026.48
  4. Step 4: Simplify right side
    158,988.18x = 19,972,658,310.97
  5. Step 5: Solve for x
    x = 19,972,658,310.97/158,988.18
  6. Step 6: Final answer
    x = 125,623.54

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1.5x scale

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.