Home / 140,140.20-193,393.80-79,709.52

Finding the Fourth Proportional to 140,140.20, 193,393.80 and 79,709.52

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Solution

The fourth proportional to 140,140.20, 193,393.80 and 79,709.52 is: 109,999.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,140.20 : 193,393.80 = 79,709.52 : x
  2. Step 2: Convert to fraction form
    140,140.20/193,393.80 = 79,709.52/x
  3. Step 3: Cross multiply
    140,140.20x = 193,393.80 × 79,709.52
  4. Step 4: Simplify right side
    140,140.20x = 15,415,326,968.98
  5. Step 5: Solve for x
    x = 15,415,326,968.98/140,140.20
  6. Step 6: Final answer
    x = 109,999.32

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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.