Home / 139,904.94-209,887.41-45,140.52

Finding the Fourth Proportional to 139,904.94, 209,887.41 and 45,140.52

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Solution

The fourth proportional to 139,904.94, 209,887.41 and 45,140.52 is: 67,720.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,904.94 : 209,887.41 = 45,140.52 : x
  2. Step 2: Convert to fraction form
    139,904.94/209,887.41 = 45,140.52/x
  3. Step 3: Cross multiply
    139,904.94x = 209,887.41 × 45,140.52
  4. Step 4: Simplify right side
    139,904.94x = 9,474,426,828.85
  5. Step 5: Solve for x
    x = 9,474,426,828.85/139,904.94
  6. Step 6: Final answer
    x = 67,720.46

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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.