Home / 141,769.55-195,641.87-78,107.36

Finding the Fourth Proportional to 141,769.55, 195,641.87 and 78,107.36

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Solution

The fourth proportional to 141,769.55, 195,641.87 and 78,107.36 is: 107,788.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,769.55 : 195,641.87 = 78,107.36 : x
  2. Step 2: Convert to fraction form
    141,769.55/195,641.87 = 78,107.36/x
  3. Step 3: Cross multiply
    141,769.55x = 195,641.87 × 78,107.36
  4. Step 4: Simplify right side
    141,769.55x = 15,281,068,602.42
  5. Step 5: Solve for x
    x = 15,281,068,602.42/141,769.55
  6. Step 6: Final answer
    x = 107,788.09

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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.