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Finding the Fourth Proportional to 145,893.89, 218,939.19 and 51,124.93

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Solution

The fourth proportional to 145,893.89, 218,939.19 and 51,124.93 is: 76,721.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,893.89 : 218,939.19 = 51,124.93 : x
  2. Step 2: Convert to fraction form
    145,893.89/218,939.19 = 51,124.93/x
  3. Step 3: Cross multiply
    145,893.89x = 218,939.19 × 51,124.93
  4. Step 4: Simplify right side
    145,893.89x = 11,193,249,412.69
  5. Step 5: Solve for x
    x = 11,193,249,412.69/145,893.89
  6. Step 6: Final answer
    x = 76,721.85

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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.