Home / 141,803.56-195,690.23-78,143.64

Finding the Fourth Proportional to 141,803.56, 195,690.23 and 78,143.64

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Solution

The fourth proportional to 141,803.56, 195,690.23 and 78,143.64 is: 107,838.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,803.56 : 195,690.23 = 78,143.64 : x
  2. Step 2: Convert to fraction form
    141,803.56/195,690.23 = 78,143.64/x
  3. Step 3: Cross multiply
    141,803.56x = 195,690.23 × 78,143.64
  4. Step 4: Simplify right side
    141,803.56x = 15,291,946,884.64
  5. Step 5: Solve for x
    x = 15,291,946,884.64/141,803.56
  6. Step 6: Final answer
    x = 107,838.95

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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.