Home / 141,405.48-195,139.08-77,743.08

Finding the Fourth Proportional to 141,405.48, 195,139.08 and 77,743.08

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Solution

The fourth proportional to 141,405.48, 195,139.08 and 77,743.08 is: 107,285.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,405.48 : 195,139.08 = 77,743.08 : x
  2. Step 2: Convert to fraction form
    141,405.48/195,139.08 = 77,743.08/x
  3. Step 3: Cross multiply
    141,405.48x = 195,139.08 × 77,743.08
  4. Step 4: Simplify right side
    141,405.48x = 15,170,713,107.57
  5. Step 5: Solve for x
    x = 15,170,713,107.57/141,405.48
  6. Step 6: Final answer
    x = 107,285.19

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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.