Home / 140,119.19-193,368.74-79,698.54

Finding the Fourth Proportional to 140,119.19, 193,368.74 and 79,698.54

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Solution

The fourth proportional to 140,119.19, 193,368.74 and 79,698.54 is: 109,986.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,119.19 : 193,368.74 = 79,698.54 : x
  2. Step 2: Convert to fraction form
    140,119.19/193,368.74 = 79,698.54/x
  3. Step 3: Cross multiply
    140,119.19x = 193,368.74 × 79,698.54
  4. Step 4: Simplify right side
    140,119.19x = 15,411,205,861.15
  5. Step 5: Solve for x
    x = 15,411,205,861.15/140,119.19
  6. Step 6: Final answer
    x = 109,986.41

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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.