Home / 140,771.76-194,267.16-77,109.36

Finding the Fourth Proportional to 140,771.76, 194,267.16 and 77,109.36

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Solution

The fourth proportional to 140,771.76, 194,267.16 and 77,109.36 is: 106,412.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,771.76 : 194,267.16 = 77,109.36 : x
  2. Step 2: Convert to fraction form
    140,771.76/194,267.16 = 77,109.36/x
  3. Step 3: Cross multiply
    140,771.76x = 194,267.16 × 77,109.36
  4. Step 4: Simplify right side
    140,771.76x = 14,979,816,376.62
  5. Step 5: Solve for x
    x = 14,979,816,376.62/140,771.76
  6. Step 6: Final answer
    x = 106,412.08

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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.