Home / 139,740.08-192,840.14-76,077.74

Finding the Fourth Proportional to 139,740.08, 192,840.14 and 76,077.74

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Solution

The fourth proportional to 139,740.08, 192,840.14 and 76,077.74 is: 104,986.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,740.08 : 192,840.14 = 76,077.74 : x
  2. Step 2: Convert to fraction form
    139,740.08/192,840.14 = 76,077.74/x
  3. Step 3: Cross multiply
    139,740.08x = 192,840.14 × 76,077.74
  4. Step 4: Simplify right side
    139,740.08x = 14,670,842,032.48
  5. Step 5: Solve for x
    x = 14,670,842,032.48/139,740.08
  6. Step 6: Final answer
    x = 104,986.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.