Home / 163,986.20-245,979.30-89,142.20

Finding the Fourth Proportional to 163,986.20, 245,979.30 and 89,142.20

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Solution

The fourth proportional to 163,986.20, 245,979.30 and 89,142.20 is: 133,713.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,986.20 : 245,979.30 = 89,142.20 : x
  2. Step 2: Convert to fraction form
    163,986.20/245,979.30 = 89,142.20/x
  3. Step 3: Cross multiply
    163,986.20x = 245,979.30 × 89,142.20
  4. Step 4: Simplify right side
    163,986.20x = 21,927,135,956.46
  5. Step 5: Solve for x
    x = 21,927,135,956.46/163,986.20
  6. Step 6: Final answer
    x = 133,713.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.