Home / 159,340.26-219,888.36-87,721.50

Finding the Fourth Proportional to 159,340.26, 219,888.36 and 87,721.50

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Solution

The fourth proportional to 159,340.26, 219,888.36 and 87,721.50 is: 121,055.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,340.26 : 219,888.36 = 87,721.50 : x
  2. Step 2: Convert to fraction form
    159,340.26/219,888.36 = 87,721.50/x
  3. Step 3: Cross multiply
    159,340.26x = 219,888.36 × 87,721.50
  4. Step 4: Simplify right side
    159,340.26x = 19,288,936,771.74
  5. Step 5: Solve for x
    x = 19,288,936,771.74/159,340.26
  6. Step 6: Final answer
    x = 121,055.01

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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.