Home / 158,112.09-218,199.87-90,127.85

Finding the Fourth Proportional to 158,112.09, 218,199.87 and 90,127.85

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Solution

The fourth proportional to 158,112.09, 218,199.87 and 90,127.85 is: 124,379.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,112.09 : 218,199.87 = 90,127.85 : x
  2. Step 2: Convert to fraction form
    158,112.09/218,199.87 = 90,127.85/x
  3. Step 3: Cross multiply
    158,112.09x = 218,199.87 × 90,127.85
  4. Step 4: Simplify right side
    158,112.09x = 19,665,884,062.38
  5. Step 5: Solve for x
    x = 19,665,884,062.38/158,112.09
  6. Step 6: Final answer
    x = 124,379.38

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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.