Home / 102,500.40-153,659.48-55,140.92

Finding the Fourth Proportional to 102,500.40, 153,659.48 and 55,140.92

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Solution

The fourth proportional to 102,500.40, 153,659.48 and 55,140.92 is: 82,662.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,500.40 : 153,659.48 = 55,140.92 : x
  2. Step 2: Convert to fraction form
    102,500.40/153,659.48 = 55,140.92/x
  3. Step 3: Cross multiply
    102,500.40x = 153,659.48 × 55,140.92
  4. Step 4: Simplify right side
    102,500.40x = 8,472,925,093.92
  5. Step 5: Solve for x
    x = 8,472,925,093.92/102,500.40
  6. Step 6: Final answer
    x = 82,662.36

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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.