Home / 254,763.90-382,145.85-128,792.70

Finding the Fourth Proportional to 254,763.90, 382,145.85 and 128,792.70

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Solution

The fourth proportional to 254,763.90, 382,145.85 and 128,792.70 is: 193,189.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,763.90 : 382,145.85 = 128,792.70 : x
  2. Step 2: Convert to fraction form
    254,763.90/382,145.85 = 128,792.70/x
  3. Step 3: Cross multiply
    254,763.90x = 382,145.85 × 128,792.70
  4. Step 4: Simplify right side
    254,763.90x = 49,217,595,815.30
  5. Step 5: Solve for x
    x = 49,217,595,815.30/254,763.90
  6. Step 6: Final answer
    x = 193,189.05

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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.