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Finding the Fourth Proportional to 103,563.79, 142,916.66 and 58,241.76

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Solution

The fourth proportional to 103,563.79, 142,916.66 and 58,241.76 is: 80,372.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,563.79 : 142,916.66 = 58,241.76 : x
  2. Step 2: Convert to fraction form
    103,563.79/142,916.66 = 58,241.76/x
  3. Step 3: Cross multiply
    103,563.79x = 142,916.66 × 58,241.76
  4. Step 4: Simplify right side
    103,563.79x = 8,323,717,811.72
  5. Step 5: Solve for x
    x = 8,323,717,811.72/103,563.79
  6. Step 6: Final answer
    x = 80,372.86

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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.