Home / 158,121.37-218,207.21-86,501.44

Finding the Fourth Proportional to 158,121.37, 218,207.21 and 86,501.44

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Solution

The fourth proportional to 158,121.37, 218,207.21 and 86,501.44 is: 119,371.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,121.37 : 218,207.21 = 86,501.44 : x
  2. Step 2: Convert to fraction form
    158,121.37/218,207.21 = 86,501.44/x
  3. Step 3: Cross multiply
    158,121.37x = 218,207.21 × 86,501.44
  4. Step 4: Simplify right side
    158,121.37x = 18,875,237,883.38
  5. Step 5: Solve for x
    x = 18,875,237,883.38/158,121.37
  6. Step 6: Final answer
    x = 119,371.83

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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.