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Finding the Fourth Proportional to 144,505.68, 216,725.64 and 69,587.58

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Solution

The fourth proportional to 144,505.68, 216,725.64 and 69,587.58 is: 104,365.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,505.68 : 216,725.64 = 69,587.58 : x
  2. Step 2: Convert to fraction form
    144,505.68/216,725.64 = 69,587.58/x
  3. Step 3: Cross multiply
    144,505.68x = 216,725.64 × 69,587.58
  4. Step 4: Simplify right side
    144,505.68x = 15,081,412,811.55
  5. Step 5: Solve for x
    x = 15,081,412,811.55/144,505.68
  6. Step 6: Final answer
    x = 104,365.54

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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.