Home / 102,990.06-154,303.40-90,197.07

Finding the Fourth Proportional to 102,990.06, 154,303.40 and 90,197.07

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Solution

The fourth proportional to 102,990.06, 154,303.40 and 90,197.07 is: 135,136.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,990.06 : 154,303.40 = 90,197.07 : x
  2. Step 2: Convert to fraction form
    102,990.06/154,303.40 = 90,197.07/x
  3. Step 3: Cross multiply
    102,990.06x = 154,303.40 × 90,197.07
  4. Step 4: Simplify right side
    102,990.06x = 13,917,714,120.05
  5. Step 5: Solve for x
    x = 13,917,714,120.05/102,990.06
  6. Step 6: Final answer
    x = 135,136.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.