Home / 161,778.48-223,250.70-90,157.20

Finding the Fourth Proportional to 161,778.48, 223,250.70 and 90,157.20

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Solution

The fourth proportional to 161,778.48, 223,250.70 and 90,157.20 is: 124,414.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,778.48 : 223,250.70 = 90,157.20 : x
  2. Step 2: Convert to fraction form
    161,778.48/223,250.70 = 90,157.20/x
  3. Step 3: Cross multiply
    161,778.48x = 223,250.70 × 90,157.20
  4. Step 4: Simplify right side
    161,778.48x = 20,127,658,010.04
  5. Step 5: Solve for x
    x = 20,127,658,010.04/161,778.48
  6. Step 6: Final answer
    x = 124,414.93

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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.