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Finding the Fourth Proportional to 161,901.28, 223,412.88 and 101,469.76

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Solution

The fourth proportional to 161,901.28, 223,412.88 and 101,469.76 is: 140,021.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,901.28 : 223,412.88 = 101,469.76 : x
  2. Step 2: Convert to fraction form
    161,901.28/223,412.88 = 101,469.76/x
  3. Step 3: Cross multiply
    161,901.28x = 223,412.88 × 101,469.76
  4. Step 4: Simplify right side
    161,901.28x = 22,669,651,314.51
  5. Step 5: Solve for x
    x = 22,669,651,314.51/161,901.28
  6. Step 6: Final answer
    x = 140,021.45

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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.