Home / 102,131.42-140,902.70-63,351.30

Finding the Fourth Proportional to 102,131.42, 140,902.70 and 63,351.30

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Solution

The fourth proportional to 102,131.42, 140,902.70 and 63,351.30 is: 87,400.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,131.42 : 140,902.70 = 63,351.30 : x
  2. Step 2: Convert to fraction form
    102,131.42/140,902.70 = 63,351.30/x
  3. Step 3: Cross multiply
    102,131.42x = 140,902.70 × 63,351.30
  4. Step 4: Simplify right side
    102,131.42x = 8,926,369,218.51
  5. Step 5: Solve for x
    x = 8,926,369,218.51/102,131.42
  6. Step 6: Final answer
    x = 87,400.81

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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.