Home / 158,720.41-219,039.74-87,101.02

Finding the Fourth Proportional to 158,720.41, 219,039.74 and 87,101.02

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Solution

The fourth proportional to 158,720.41, 219,039.74 and 87,101.02 is: 120,202.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,720.41 : 219,039.74 = 87,101.02 : x
  2. Step 2: Convert to fraction form
    158,720.41/219,039.74 = 87,101.02/x
  3. Step 3: Cross multiply
    158,720.41x = 219,039.74 × 87,101.02
  4. Step 4: Simplify right side
    158,720.41x = 19,078,585,429.40
  5. Step 5: Solve for x
    x = 19,078,585,429.40/158,720.41
  6. Step 6: Final answer
    x = 120,202.47

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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.