Home / 141,783.54-195,670.02-78,121.32

Finding the Fourth Proportional to 141,783.54, 195,670.02 and 78,121.32

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Solution

The fourth proportional to 141,783.54, 195,670.02 and 78,121.32 is: 107,812.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,783.54 : 195,670.02 = 78,121.32 : x
  2. Step 2: Convert to fraction form
    141,783.54/195,670.02 = 78,121.32/x
  3. Step 3: Cross multiply
    141,783.54x = 195,670.02 × 78,121.32
  4. Step 4: Simplify right side
    141,783.54x = 15,286,000,246.83
  5. Step 5: Solve for x
    x = 15,286,000,246.83/141,783.54
  6. Step 6: Final answer
    x = 107,812.23

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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.