Home / 147,668.16-221,137.92-84,331.20

Finding the Fourth Proportional to 147,668.16, 221,137.92 and 84,331.20

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Solution

The fourth proportional to 147,668.16, 221,137.92 and 84,331.20 is: 126,288.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,668.16 : 221,137.92 = 84,331.20 : x
  2. Step 2: Convert to fraction form
    147,668.16/221,137.92 = 84,331.20/x
  3. Step 3: Cross multiply
    147,668.16x = 221,137.92 × 84,331.20
  4. Step 4: Simplify right side
    147,668.16x = 18,648,826,159.10
  5. Step 5: Solve for x
    x = 18,648,826,159.10/147,668.16
  6. Step 6: Final answer
    x = 126,288.74

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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.