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Finding the Fourth Proportional to 161,243.64, 222,615.81 and 103,903.20

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Solution

The fourth proportional to 161,243.64, 222,615.81 and 103,903.20 is: 143,450.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,243.64 : 222,615.81 = 103,903.20 : x
  2. Step 2: Convert to fraction form
    161,243.64/222,615.81 = 103,903.20/x
  3. Step 3: Cross multiply
    161,243.64x = 222,615.81 × 103,903.20
  4. Step 4: Simplify right side
    161,243.64x = 23,130,495,029.59
  5. Step 5: Solve for x
    x = 23,130,495,029.59/161,243.64
  6. Step 6: Final answer
    x = 143,450.59

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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.