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Finding the Fourth Proportional to 161,145.40, 222,412.46 and 102,964.92

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Solution

The fourth proportional to 161,145.40, 222,412.46 and 102,964.92 is: 142,111.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,145.40 : 222,412.46 = 102,964.92 : x
  2. Step 2: Convert to fraction form
    161,145.40/222,412.46 = 102,964.92/x
  3. Step 3: Cross multiply
    161,145.40x = 222,412.46 × 102,964.92
  4. Step 4: Simplify right side
    161,145.40x = 22,900,681,150.90
  5. Step 5: Solve for x
    x = 22,900,681,150.90/161,145.40
  6. Step 6: Final answer
    x = 142,111.91

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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.