Home / 158,639.92-218,926-87,023.60

Finding the Fourth Proportional to 158,639.92, 218,926 and 87,023.60

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Solution

The fourth proportional to 158,639.92, 218,926 and 87,023.60 is: 120,094.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,639.92 : 218,926 = 87,023.60 : x
  2. Step 2: Convert to fraction form
    158,639.92/218,926 = 87,023.60/x
  3. Step 3: Cross multiply
    158,639.92x = 218,926 × 87,023.60
  4. Step 4: Simplify right side
    158,639.92x = 19,051,728,653.60
  5. Step 5: Solve for x
    x = 19,051,728,653.60/158,639.92
  6. Step 6: Final answer
    x = 120,094.16

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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.