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Finding the Fourth Proportional to 161,401.92, 222,710.64 and 89,782.80

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Solution

The fourth proportional to 161,401.92, 222,710.64 and 89,782.80 is: 123,886.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,401.92 : 222,710.64 = 89,782.80 : x
  2. Step 2: Convert to fraction form
    161,401.92/222,710.64 = 89,782.80/x
  3. Step 3: Cross multiply
    161,401.92x = 222,710.64 × 89,782.80
  4. Step 4: Simplify right side
    161,401.92x = 19,995,584,848.99
  5. Step 5: Solve for x
    x = 19,995,584,848.99/161,401.92
  6. Step 6: Final answer
    x = 123,886.91

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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.