Home / 255,113.20-382,725.15-77,615.61

Finding the Fourth Proportional to 255,113.20, 382,725.15 and 77,615.61

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Solution

The fourth proportional to 255,113.20, 382,725.15 and 77,615.61 is: 116,440.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,113.20 : 382,725.15 = 77,615.61 : x
  2. Step 2: Convert to fraction form
    255,113.20/382,725.15 = 77,615.61/x
  3. Step 3: Cross multiply
    255,113.20x = 382,725.15 × 77,615.61
  4. Step 4: Simplify right side
    255,113.20x = 29,705,445,979.59
  5. Step 5: Solve for x
    x = 29,705,445,979.59/255,113.20
  6. Step 6: Final answer
    x = 116,440.25

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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.