Home / 139,113.02-208,529.32-54,840.57

Finding the Fourth Proportional to 139,113.02, 208,529.32 and 54,840.57

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Solution

The fourth proportional to 139,113.02, 208,529.32 and 54,840.57 is: 82,205.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,113.02 : 208,529.32 = 54,840.57 : x
  2. Step 2: Convert to fraction form
    139,113.02/208,529.32 = 54,840.57/x
  3. Step 3: Cross multiply
    139,113.02x = 208,529.32 × 54,840.57
  4. Step 4: Simplify right side
    139,113.02x = 11,435,866,770.51
  5. Step 5: Solve for x
    x = 11,435,866,770.51/139,113.02
  6. Step 6: Final answer
    x = 82,205.58

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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.