Home / 158,111.36-218,198.84-90,127.08

Finding the Fourth Proportional to 158,111.36, 218,198.84 and 90,127.08

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Solution

The fourth proportional to 158,111.36, 218,198.84 and 90,127.08 is: 124,378.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,111.36 : 218,198.84 = 90,127.08 : x
  2. Step 2: Convert to fraction form
    158,111.36/218,198.84 = 90,127.08/x
  3. Step 3: Cross multiply
    158,111.36x = 218,198.84 × 90,127.08
  4. Step 4: Simplify right side
    158,111.36x = 19,665,623,857.95
  5. Step 5: Solve for x
    x = 19,665,623,857.95/158,111.36
  6. Step 6: Final answer
    x = 124,378.31

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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.