Home / 158,729.87-219,040.34-87,111.09

Finding the Fourth Proportional to 158,729.87, 219,040.34 and 87,111.09

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Solution

The fourth proportional to 158,729.87, 219,040.34 and 87,111.09 is: 120,209.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,729.87 : 219,040.34 = 87,111.09 : x
  2. Step 2: Convert to fraction form
    158,729.87/219,040.34 = 87,111.09/x
  3. Step 3: Cross multiply
    158,729.87x = 219,040.34 × 87,111.09
  4. Step 4: Simplify right side
    158,729.87x = 19,080,842,335.82
  5. Step 5: Solve for x
    x = 19,080,842,335.82/158,729.87
  6. Step 6: Final answer
    x = 120,209.52

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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.