Home / 158,220.76-218,290.37-90,188.66

Finding the Fourth Proportional to 158,220.76, 218,290.37 and 90,188.66

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Solution

The fourth proportional to 158,220.76, 218,290.37 and 90,188.66 is: 124,429.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,220.76 : 218,290.37 = 90,188.66 : x
  2. Step 2: Convert to fraction form
    158,220.76/218,290.37 = 90,188.66/x
  3. Step 3: Cross multiply
    158,220.76x = 218,290.37 × 90,188.66
  4. Step 4: Simplify right side
    158,220.76x = 19,687,315,961.20
  5. Step 5: Solve for x
    x = 19,687,315,961.20/158,220.76
  6. Step 6: Final answer
    x = 124,429.41

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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.