Home / 140,642.81-194,088.91-76,979.24

Finding the Fourth Proportional to 140,642.81, 194,088.91 and 76,979.24

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Solution

The fourth proportional to 140,642.81, 194,088.91 and 76,979.24 is: 106,232.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,642.81 : 194,088.91 = 76,979.24 : x
  2. Step 2: Convert to fraction form
    140,642.81/194,088.91 = 76,979.24/x
  3. Step 3: Cross multiply
    140,642.81x = 194,088.91 × 76,979.24
  4. Step 4: Simplify right side
    140,642.81x = 14,940,817,077.00
  5. Step 5: Solve for x
    x = 14,940,817,077.00/140,642.81
  6. Step 6: Final answer
    x = 106,232.35

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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.