Home / 140,941.02-194,497.20-77,278.68

Finding the Fourth Proportional to 140,941.02, 194,497.20 and 77,278.68

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Solution

The fourth proportional to 140,941.02, 194,497.20 and 77,278.68 is: 106,643.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,941.02 : 194,497.20 = 77,278.68 : x
  2. Step 2: Convert to fraction form
    140,941.02/194,497.20 = 77,278.68/x
  3. Step 3: Cross multiply
    140,941.02x = 194,497.20 × 77,278.68
  4. Step 4: Simplify right side
    140,941.02x = 15,030,486,879.70
  5. Step 5: Solve for x
    x = 15,030,486,879.70/140,941.02
  6. Step 6: Final answer
    x = 106,643.81

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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.