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Finding the Fourth Proportional to 122,059.68, 168,462.29 and 72,998.08

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Solution

The fourth proportional to 122,059.68, 168,462.29 and 72,998.08 is: 100,749.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,059.68 : 168,462.29 = 72,998.08 : x
  2. Step 2: Convert to fraction form
    122,059.68/168,462.29 = 72,998.08/x
  3. Step 3: Cross multiply
    122,059.68x = 168,462.29 × 72,998.08
  4. Step 4: Simplify right side
    122,059.68x = 12,297,423,483.74
  5. Step 5: Solve for x
    x = 12,297,423,483.74/122,059.68
  6. Step 6: Final answer
    x = 100,749.27

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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.