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Finding the Fourth Proportional to 153,980.58, 212,375.12 and 92,662.88

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Solution

The fourth proportional to 153,980.58, 212,375.12 and 92,662.88 is: 127,803.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,980.58 : 212,375.12 = 92,662.88 : x
  2. Step 2: Convert to fraction form
    153,980.58/212,375.12 = 92,662.88/x
  3. Step 3: Cross multiply
    153,980.58x = 212,375.12 × 92,662.88
  4. Step 4: Simplify right side
    153,980.58x = 19,679,288,734.36
  5. Step 5: Solve for x
    x = 19,679,288,734.36/153,980.58
  6. Step 6: Final answer
    x = 127,803.71

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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.