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Finding the Fourth Proportional to 189,065.45, 260,915.88 and 104,187.98

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Solution

The fourth proportional to 189,065.45, 260,915.88 and 104,187.98 is: 143,782.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,065.45 : 260,915.88 = 104,187.98 : x
  2. Step 2: Convert to fraction form
    189,065.45/260,915.88 = 104,187.98/x
  3. Step 3: Cross multiply
    189,065.45x = 260,915.88 × 104,187.98
  4. Step 4: Simplify right side
    189,065.45x = 27,184,297,182.54
  5. Step 5: Solve for x
    x = 27,184,297,182.54/189,065.45
  6. Step 6: Final answer
    x = 143,782.47

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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.