Home / 159,009.19-219,419.82-91,010.70

Finding the Fourth Proportional to 159,009.19, 219,419.82 and 91,010.70

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Solution

The fourth proportional to 159,009.19, 219,419.82 and 91,010.70 is: 125,587.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,009.19 : 219,419.82 = 91,010.70 : x
  2. Step 2: Convert to fraction form
    159,009.19/219,419.82 = 91,010.70/x
  3. Step 3: Cross multiply
    159,009.19x = 219,419.82 × 91,010.70
  4. Step 4: Simplify right side
    159,009.19x = 19,969,551,412.07
  5. Step 5: Solve for x
    x = 19,969,551,412.07/159,009.19
  6. Step 6: Final answer
    x = 125,587.41

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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.