Home / 139,739.04-209,421.60-68,552.64

Finding the Fourth Proportional to 139,739.04, 209,421.60 and 68,552.64

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Solution

The fourth proportional to 139,739.04, 209,421.60 and 68,552.64 is: 102,737.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,739.04 : 209,421.60 = 68,552.64 : x
  2. Step 2: Convert to fraction form
    139,739.04/209,421.60 = 68,552.64/x
  3. Step 3: Cross multiply
    139,739.04x = 209,421.60 × 68,552.64
  4. Step 4: Simplify right side
    139,739.04x = 14,356,403,553.02
  5. Step 5: Solve for x
    x = 14,356,403,553.02/139,739.04
  6. Step 6: Final answer
    x = 102,737.24

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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.