Home / 195,477.20-293,292.60-77,128.40

Finding the Fourth Proportional to 195,477.20, 293,292.60 and 77,128.40

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Solution

The fourth proportional to 195,477.20, 293,292.60 and 77,128.40 is: 115,722.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,477.20 : 293,292.60 = 77,128.40 : x
  2. Step 2: Convert to fraction form
    195,477.20/293,292.60 = 77,128.40/x
  3. Step 3: Cross multiply
    195,477.20x = 293,292.60 × 77,128.40
  4. Step 4: Simplify right side
    195,477.20x = 22,621,188,969.84
  5. Step 5: Solve for x
    x = 22,621,188,969.84/195,477.20
  6. Step 6: Final answer
    x = 115,722.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.