Home / 140,143.77-193,392.36-79,705.89

Finding the Fourth Proportional to 140,143.77, 193,392.36 and 79,705.89

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Solution

The fourth proportional to 140,143.77, 193,392.36 and 79,705.89 is: 109,990.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,143.77 : 193,392.36 = 79,705.89 : x
  2. Step 2: Convert to fraction form
    140,143.77/193,392.36 = 79,705.89/x
  3. Step 3: Cross multiply
    140,143.77x = 193,392.36 × 79,705.89
  4. Step 4: Simplify right side
    140,143.77x = 15,414,510,173.00
  5. Step 5: Solve for x
    x = 15,414,510,173.00/140,143.77
  6. Step 6: Final answer
    x = 109,990.69

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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.