Home / 255,867.06-353,095.74-142,689.78

Finding the Fourth Proportional to 255,867.06, 353,095.74 and 142,689.78

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Solution

The fourth proportional to 255,867.06, 353,095.74 and 142,689.78 is: 196,911.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,867.06 : 353,095.74 = 142,689.78 : x
  2. Step 2: Convert to fraction form
    255,867.06/353,095.74 = 142,689.78/x
  3. Step 3: Cross multiply
    255,867.06x = 353,095.74 × 142,689.78
  4. Step 4: Simplify right side
    255,867.06x = 50,383,153,459.54
  5. Step 5: Solve for x
    x = 50,383,153,459.54/255,867.06
  6. Step 6: Final answer
    x = 196,911.45

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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.