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Finding the Fourth Proportional to 101,615.50, 140,229.12 and 56,293.57

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Solution

The fourth proportional to 101,615.50, 140,229.12 and 56,293.57 is: 77,684.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,615.50 : 140,229.12 = 56,293.57 : x
  2. Step 2: Convert to fraction form
    101,615.50/140,229.12 = 56,293.57/x
  3. Step 3: Cross multiply
    101,615.50x = 140,229.12 × 56,293.57
  4. Step 4: Simplify right side
    101,615.50x = 7,893,997,782.76
  5. Step 5: Solve for x
    x = 7,893,997,782.76/101,615.50
  6. Step 6: Final answer
    x = 77,684.98

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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.