Home / 158,203.50-218,321.18-86,588.13

Finding the Fourth Proportional to 158,203.50, 218,321.18 and 86,588.13

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Solution

The fourth proportional to 158,203.50, 218,321.18 and 86,588.13 is: 119,491.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,203.50 : 218,321.18 = 86,588.13 : x
  2. Step 2: Convert to fraction form
    158,203.50/218,321.18 = 86,588.13/x
  3. Step 3: Cross multiply
    158,203.50x = 218,321.18 × 86,588.13
  4. Step 4: Simplify right side
    158,203.50x = 18,904,022,715.59
  5. Step 5: Solve for x
    x = 18,904,022,715.59/158,203.50
  6. Step 6: Final answer
    x = 119,491.81

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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.