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Finding the Fourth Proportional to 120,016.65, 165,628.01 and 69,029.39

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Solution

The fourth proportional to 120,016.65, 165,628.01 and 69,029.39 is: 95,263.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,016.65 : 165,628.01 = 69,029.39 : x
  2. Step 2: Convert to fraction form
    120,016.65/165,628.01 = 69,029.39/x
  3. Step 3: Cross multiply
    120,016.65x = 165,628.01 × 69,029.39
  4. Step 4: Simplify right side
    120,016.65x = 11,433,200,152.07
  5. Step 5: Solve for x
    x = 11,433,200,152.07/120,016.65
  6. Step 6: Final answer
    x = 95,263.45

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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.