Home / 140,409.94-193,743.09-79,981.76

Finding the Fourth Proportional to 140,409.94, 193,743.09 and 79,981.76

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Solution

The fourth proportional to 140,409.94, 193,743.09 and 79,981.76 is: 110,361.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,409.94 : 193,743.09 = 79,981.76 : x
  2. Step 2: Convert to fraction form
    140,409.94/193,743.09 = 79,981.76/x
  3. Step 3: Cross multiply
    140,409.94x = 193,743.09 × 79,981.76
  4. Step 4: Simplify right side
    140,409.94x = 15,495,913,810.40
  5. Step 5: Solve for x
    x = 15,495,913,810.40/140,409.94
  6. Step 6: Final answer
    x = 110,361.94

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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.