Home / 212,235.12-292,815-121,601.52

Finding the Fourth Proportional to 212,235.12, 292,815 and 121,601.52

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Solution

The fourth proportional to 212,235.12, 292,815 and 121,601.52 is: 167,770.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,235.12 : 292,815 = 121,601.52 : x
  2. Step 2: Convert to fraction form
    212,235.12/292,815 = 121,601.52/x
  3. Step 3: Cross multiply
    212,235.12x = 292,815 × 121,601.52
  4. Step 4: Simplify right side
    212,235.12x = 35,606,749,078.80
  5. Step 5: Solve for x
    x = 35,606,749,078.80/212,235.12
  6. Step 6: Final answer
    x = 167,770.30

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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.