Home / 139,904.24-209,778.60-55,657.76

Finding the Fourth Proportional to 139,904.24, 209,778.60 and 55,657.76

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Solution

The fourth proportional to 139,904.24, 209,778.60 and 55,657.76 is: 83,455.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,904.24 : 209,778.60 = 55,657.76 : x
  2. Step 2: Convert to fraction form
    139,904.24/209,778.60 = 55,657.76/x
  3. Step 3: Cross multiply
    139,904.24x = 209,778.60 × 55,657.76
  4. Step 4: Simplify right side
    139,904.24x = 11,675,806,971.94
  5. Step 5: Solve for x
    x = 11,675,806,971.94/139,904.24
  6. Step 6: Final answer
    x = 83,455.70

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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.