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Finding the Fourth Proportional to 122,289.84, 168,756.46 and 74,525.76

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Solution

The fourth proportional to 122,289.84, 168,756.46 and 74,525.76 is: 102,843.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,289.84 : 168,756.46 = 74,525.76 : x
  2. Step 2: Convert to fraction form
    122,289.84/168,756.46 = 74,525.76/x
  3. Step 3: Cross multiply
    122,289.84x = 168,756.46 × 74,525.76
  4. Step 4: Simplify right side
    122,289.84x = 12,576,703,250.10
  5. Step 5: Solve for x
    x = 12,576,703,250.10/122,289.84
  6. Step 6: Final answer
    x = 102,843.40

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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.