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Finding the Fourth Proportional to 124,166.61, 171,361.89 and 76,447.89

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Solution

The fourth proportional to 124,166.61, 171,361.89 and 76,447.89 is: 105,505.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,166.61 : 171,361.89 = 76,447.89 : x
  2. Step 2: Convert to fraction form
    124,166.61/171,361.89 = 76,447.89/x
  3. Step 3: Cross multiply
    124,166.61x = 171,361.89 × 76,447.89
  4. Step 4: Simplify right side
    124,166.61x = 13,100,254,916.91
  5. Step 5: Solve for x
    x = 13,100,254,916.91/124,166.61
  6. Step 6: Final answer
    x = 105,505.46

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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.