Home / 139,741.76-192,844.42-76,079.40

Finding the Fourth Proportional to 139,741.76, 192,844.42 and 76,079.40

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Solution

The fourth proportional to 139,741.76, 192,844.42 and 76,079.40 is: 104,990.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,741.76 : 192,844.42 = 76,079.40 : x
  2. Step 2: Convert to fraction form
    139,741.76/192,844.42 = 76,079.40/x
  3. Step 3: Cross multiply
    139,741.76x = 192,844.42 × 76,079.40
  4. Step 4: Simplify right side
    139,741.76x = 14,671,487,766.95
  5. Step 5: Solve for x
    x = 14,671,487,766.95/139,741.76
  6. Step 6: Final answer
    x = 104,990.00

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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.