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Finding the Fourth Proportional to 145,062.76, 217,166.46 and 141,485.80

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Solution

The fourth proportional to 145,062.76, 217,166.46 and 141,485.80 is: 211,811.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,062.76 : 217,166.46 = 141,485.80 : x
  2. Step 2: Convert to fraction form
    145,062.76/217,166.46 = 141,485.80/x
  3. Step 3: Cross multiply
    145,062.76x = 217,166.46 × 141,485.80
  4. Step 4: Simplify right side
    145,062.76x = 30,725,970,326.27
  5. Step 5: Solve for x
    x = 30,725,970,326.27/145,062.76
  6. Step 6: Final answer
    x = 211,811.57

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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.