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Finding the Fourth Proportional to 101,087.35, 139,500.54 and 55,765.44

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Solution

The fourth proportional to 101,087.35, 139,500.54 and 55,765.44 is: 76,956.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,087.35 : 139,500.54 = 55,765.44 : x
  2. Step 2: Convert to fraction form
    101,087.35/139,500.54 = 55,765.44/x
  3. Step 3: Cross multiply
    101,087.35x = 139,500.54 × 55,765.44
  4. Step 4: Simplify right side
    101,087.35x = 7,779,308,295.83
  5. Step 5: Solve for x
    x = 7,779,308,295.83/101,087.35
  6. Step 6: Final answer
    x = 76,956.30

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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.