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Finding the Fourth Proportional to 139,477.58, 209,217.84 and 55,258.24

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Solution

The fourth proportional to 139,477.58, 209,217.84 and 55,258.24 is: 82,887.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,477.58 : 209,217.84 = 55,258.24 : x
  2. Step 2: Convert to fraction form
    139,477.58/209,217.84 = 55,258.24/x
  3. Step 3: Cross multiply
    139,477.58x = 209,217.84 × 55,258.24
  4. Step 4: Simplify right side
    139,477.58x = 11,561,009,615.00
  5. Step 5: Solve for x
    x = 11,561,009,615.00/139,477.58
  6. Step 6: Final answer
    x = 82,887.94

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1.5x scale

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.