Home / 158,529.80-218,768.64-86,910.41

Finding the Fourth Proportional to 158,529.80, 218,768.64 and 86,910.41

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Solution

The fourth proportional to 158,529.80, 218,768.64 and 86,910.41 is: 119,935.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,529.80 : 218,768.64 = 86,910.41 : x
  2. Step 2: Convert to fraction form
    158,529.80/218,768.64 = 86,910.41/x
  3. Step 3: Cross multiply
    158,529.80x = 218,768.64 × 86,910.41
  4. Step 4: Simplify right side
    158,529.80x = 19,013,272,197.54
  5. Step 5: Solve for x
    x = 19,013,272,197.54/158,529.80
  6. Step 6: Final answer
    x = 119,935.00

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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.