Home / 161,634.32-223,054.80-90,015.20

Finding the Fourth Proportional to 161,634.32, 223,054.80 and 90,015.20

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Solution

The fourth proportional to 161,634.32, 223,054.80 and 90,015.20 is: 124,220.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,634.32 : 223,054.80 = 90,015.20 : x
  2. Step 2: Convert to fraction form
    161,634.32/223,054.80 = 90,015.20/x
  3. Step 3: Cross multiply
    161,634.32x = 223,054.80 × 90,015.20
  4. Step 4: Simplify right side
    161,634.32x = 20,078,322,432.96
  5. Step 5: Solve for x
    x = 20,078,322,432.96/161,634.32
  6. Step 6: Final answer
    x = 124,220.66

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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.