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Finding the Fourth Proportional to 170,055.60, 255,083.40 and 76,743.60

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Solution

The fourth proportional to 170,055.60, 255,083.40 and 76,743.60 is: 115,115.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,055.60 : 255,083.40 = 76,743.60 : x
  2. Step 2: Convert to fraction form
    170,055.60/255,083.40 = 76,743.60/x
  3. Step 3: Cross multiply
    170,055.60x = 255,083.40 × 76,743.60
  4. Step 4: Simplify right side
    170,055.60x = 19,576,018,416.24
  5. Step 5: Solve for x
    x = 19,576,018,416.24/170,055.60
  6. Step 6: Final answer
    x = 115,115.40

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1.5x scale

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.