Home / 189,762.12-261,872.52-103,722.84

Finding the Fourth Proportional to 189,762.12, 261,872.52 and 103,722.84

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Solution

The fourth proportional to 189,762.12, 261,872.52 and 103,722.84 is: 143,137.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,762.12 : 261,872.52 = 103,722.84 : x
  2. Step 2: Convert to fraction form
    189,762.12/261,872.52 = 103,722.84/x
  3. Step 3: Cross multiply
    189,762.12x = 261,872.52 × 103,722.84
  4. Step 4: Simplify right side
    189,762.12x = 27,162,161,492.36
  5. Step 5: Solve for x
    x = 27,162,161,492.36/189,762.12
  6. Step 6: Final answer
    x = 143,137.95

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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.