Home / 141,285.76-194,979-77,628.16

Finding the Fourth Proportional to 141,285.76, 194,979 and 77,628.16

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Solution

The fourth proportional to 141,285.76, 194,979 and 77,628.16 is: 107,129.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,285.76 : 194,979 = 77,628.16 : x
  2. Step 2: Convert to fraction form
    141,285.76/194,979 = 77,628.16/x
  3. Step 3: Cross multiply
    141,285.76x = 194,979 × 77,628.16
  4. Step 4: Simplify right side
    141,285.76x = 15,135,861,008.64
  5. Step 5: Solve for x
    x = 15,135,861,008.64/141,285.76
  6. Step 6: Final answer
    x = 107,129.42

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1.5x scale

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.