Home / 102,015.51-140,784.83-56,695.41

Finding the Fourth Proportional to 102,015.51, 140,784.83 and 56,695.41

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Solution

The fourth proportional to 102,015.51, 140,784.83 and 56,695.41 is: 78,241.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,015.51 : 140,784.83 = 56,695.41 : x
  2. Step 2: Convert to fraction form
    102,015.51/140,784.83 = 56,695.41/x
  3. Step 3: Cross multiply
    102,015.51x = 140,784.83 × 56,695.41
  4. Step 4: Simplify right side
    102,015.51x = 7,981,853,658.63
  5. Step 5: Solve for x
    x = 7,981,853,658.63/102,015.51
  6. Step 6: Final answer
    x = 78,241.57

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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.