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Finding the Fourth Proportional to 189,087.68, 283,608.84 and 70,756.40

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Solution

The fourth proportional to 189,087.68, 283,608.84 and 70,756.40 is: 106,126.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,087.68 : 283,608.84 = 70,756.40 : x
  2. Step 2: Convert to fraction form
    189,087.68/283,608.84 = 70,756.40/x
  3. Step 3: Cross multiply
    189,087.68x = 283,608.84 × 70,756.40
  4. Step 4: Simplify right side
    189,087.68x = 20,067,140,526.58
  5. Step 5: Solve for x
    x = 20,067,140,526.58/189,087.68
  6. Step 6: Final answer
    x = 106,126.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.