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Finding the Fourth Proportional to 185,442.58, 255,838.35 and 120,987.64

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Solution

The fourth proportional to 185,442.58, 255,838.35 and 120,987.64 is: 166,915.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,442.58 : 255,838.35 = 120,987.64 : x
  2. Step 2: Convert to fraction form
    185,442.58/255,838.35 = 120,987.64/x
  3. Step 3: Cross multiply
    185,442.58x = 255,838.35 × 120,987.64
  4. Step 4: Simplify right side
    185,442.58x = 30,953,278,187.99
  5. Step 5: Solve for x
    x = 30,953,278,187.99/185,442.58
  6. Step 6: Final answer
    x = 166,915.70

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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.