Home / 158,045.12-218,122.64-90,086.88

Finding the Fourth Proportional to 158,045.12, 218,122.64 and 90,086.88

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Solution

The fourth proportional to 158,045.12, 218,122.64 and 90,086.88 is: 124,331.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,045.12 : 218,122.64 = 90,086.88 : x
  2. Step 2: Convert to fraction form
    158,045.12/218,122.64 = 90,086.88/x
  3. Step 3: Cross multiply
    158,045.12x = 218,122.64 × 90,086.88
  4. Step 4: Simplify right side
    158,045.12x = 19,649,988,094.96
  5. Step 5: Solve for x
    x = 19,649,988,094.96/158,045.12
  6. Step 6: Final answer
    x = 124,331.51

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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.