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Finding the Fourth Proportional to 161,633.70, 223,038.54 and 90,020.39

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Solution

The fourth proportional to 161,633.70, 223,038.54 and 90,020.39 is: 124,219.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,633.70 : 223,038.54 = 90,020.39 : x
  2. Step 2: Convert to fraction form
    161,633.70/223,038.54 = 90,020.39/x
  3. Step 3: Cross multiply
    161,633.70x = 223,038.54 × 90,020.39
  4. Step 4: Simplify right side
    161,633.70x = 20,078,015,240.64
  5. Step 5: Solve for x
    x = 20,078,015,240.64/161,633.70
  6. Step 6: Final answer
    x = 124,219.24

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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.