Home / 153,873.03-212,380.21-90,231.33

Finding the Fourth Proportional to 153,873.03, 212,380.21 and 90,231.33

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Solution

The fourth proportional to 153,873.03, 212,380.21 and 90,231.33 is: 124,540.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,873.03 : 212,380.21 = 90,231.33 : x
  2. Step 2: Convert to fraction form
    153,873.03/212,380.21 = 90,231.33/x
  3. Step 3: Cross multiply
    153,873.03x = 212,380.21 × 90,231.33
  4. Step 4: Simplify right side
    153,873.03x = 19,163,349,723.19
  5. Step 5: Solve for x
    x = 19,163,349,723.19/153,873.03
  6. Step 6: Final answer
    x = 124,540.01

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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.