Home / 120,621.42-166,458.36-66,907.35

Finding the Fourth Proportional to 120,621.42, 166,458.36 and 66,907.35

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Solution

The fourth proportional to 120,621.42, 166,458.36 and 66,907.35 is: 92,332.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,621.42 : 166,458.36 = 66,907.35 : x
  2. Step 2: Convert to fraction form
    120,621.42/166,458.36 = 66,907.35/x
  3. Step 3: Cross multiply
    120,621.42x = 166,458.36 × 66,907.35
  4. Step 4: Simplify right side
    120,621.42x = 11,137,287,752.95
  5. Step 5: Solve for x
    x = 11,137,287,752.95/120,621.42
  6. Step 6: Final answer
    x = 92,332.59

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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.