Home / 158,339.90-218,504.79-90,355.66

Finding the Fourth Proportional to 158,339.90, 218,504.79 and 90,355.66

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Solution

The fourth proportional to 158,339.90, 218,504.79 and 90,355.66 is: 124,688.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,339.90 : 218,504.79 = 90,355.66 : x
  2. Step 2: Convert to fraction form
    158,339.90/218,504.79 = 90,355.66/x
  3. Step 3: Cross multiply
    158,339.90x = 218,504.79 × 90,355.66
  4. Step 4: Simplify right side
    158,339.90x = 19,743,143,967.35
  5. Step 5: Solve for x
    x = 19,743,143,967.35/158,339.90
  6. Step 6: Final answer
    x = 124,688.37

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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.