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Finding the Fourth Proportional to 170,978.36, 235,959.12 and 103,016.68

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Solution

The fourth proportional to 170,978.36, 235,959.12 and 103,016.68 is: 142,168.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,978.36 : 235,959.12 = 103,016.68 : x
  2. Step 2: Convert to fraction form
    170,978.36/235,959.12 = 103,016.68/x
  3. Step 3: Cross multiply
    170,978.36x = 235,959.12 × 103,016.68
  4. Step 4: Simplify right side
    170,978.36x = 24,307,725,158.12
  5. Step 5: Solve for x
    x = 24,307,725,158.12/170,978.36
  6. Step 6: Final answer
    x = 142,168.43

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1.5x scale

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.