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Finding the Fourth Proportional to 103,854.74, 155,671.39 and 53,866.07

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Solution

The fourth proportional to 103,854.74, 155,671.39 and 53,866.07 is: 80,741.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,854.74 : 155,671.39 = 53,866.07 : x
  2. Step 2: Convert to fraction form
    103,854.74/155,671.39 = 53,866.07/x
  3. Step 3: Cross multiply
    103,854.74x = 155,671.39 × 53,866.07
  4. Step 4: Simplify right side
    103,854.74x = 8,385,405,205.79
  5. Step 5: Solve for x
    x = 8,385,405,205.79/103,854.74
  6. Step 6: Final answer
    x = 80,741.67

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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.