Home / 158,741.69-219,056.51-87,121.85

Finding the Fourth Proportional to 158,741.69, 219,056.51 and 87,121.85

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Solution

The fourth proportional to 158,741.69, 219,056.51 and 87,121.85 is: 120,224.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,741.69 : 219,056.51 = 87,121.85 : x
  2. Step 2: Convert to fraction form
    158,741.69/219,056.51 = 87,121.85/x
  3. Step 3: Cross multiply
    158,741.69x = 219,056.51 × 87,121.85
  4. Step 4: Simplify right side
    158,741.69x = 19,084,607,970.13
  5. Step 5: Solve for x
    x = 19,084,607,970.13/158,741.69
  6. Step 6: Final answer
    x = 120,224.30

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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.