Home / 140,144.32-193,394.28-79,710.40

Finding the Fourth Proportional to 140,144.32, 193,394.28 and 79,710.40

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Solution

The fourth proportional to 140,144.32, 193,394.28 and 79,710.40 is: 109,997.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,144.32 : 193,394.28 = 79,710.40 : x
  2. Step 2: Convert to fraction form
    140,144.32/193,394.28 = 79,710.40/x
  3. Step 3: Cross multiply
    140,144.32x = 193,394.28 × 79,710.40
  4. Step 4: Simplify right side
    140,144.32x = 15,415,535,416.51
  5. Step 5: Solve for x
    x = 15,415,535,416.51/140,144.32
  6. Step 6: Final answer
    x = 109,997.58

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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.