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Finding the Fourth Proportional to 189,081.55, 260,932.58 and 103,040.60

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Solution

The fourth proportional to 189,081.55, 260,932.58 and 103,040.60 is: 142,196.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,081.55 : 260,932.58 = 103,040.60 : x
  2. Step 2: Convert to fraction form
    189,081.55/260,932.58 = 103,040.60/x
  3. Step 3: Cross multiply
    189,081.55x = 260,932.58 × 103,040.60
  4. Step 4: Simplify right side
    189,081.55x = 26,886,649,960.71
  5. Step 5: Solve for x
    x = 26,886,649,960.71/189,081.55
  6. Step 6: Final answer
    x = 142,196.05

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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.