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Finding the Fourth Proportional to 101,611.38, 140,223.68 and 56,292.31

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Solution

The fourth proportional to 101,611.38, 140,223.68 and 56,292.31 is: 77,683.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,611.38 : 140,223.68 = 56,292.31 : x
  2. Step 2: Convert to fraction form
    101,611.38/140,223.68 = 56,292.31/x
  3. Step 3: Cross multiply
    101,611.38x = 140,223.68 × 56,292.31
  4. Step 4: Simplify right side
    101,611.38x = 7,893,514,162.78
  5. Step 5: Solve for x
    x = 7,893,514,162.78/101,611.38
  6. Step 6: Final answer
    x = 77,683.37

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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.