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Finding the Fourth Proportional to 107,050.70, 147,745.69 and 61,719.80

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Solution

The fourth proportional to 107,050.70, 147,745.69 and 61,719.80 is: 85,182.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,050.70 : 147,745.69 = 61,719.80 : x
  2. Step 2: Convert to fraction form
    107,050.70/147,745.69 = 61,719.80/x
  3. Step 3: Cross multiply
    107,050.70x = 147,745.69 × 61,719.80
  4. Step 4: Simplify right side
    107,050.70x = 9,118,834,437.66
  5. Step 5: Solve for x
    x = 9,118,834,437.66/107,050.70
  6. Step 6: Final answer
    x = 85,182.39

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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.