Home / 139,845.88-192,985.58-76,182.32

Finding the Fourth Proportional to 139,845.88, 192,985.58 and 76,182.32

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Solution

The fourth proportional to 139,845.88, 192,985.58 and 76,182.32 is: 105,130.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,845.88 : 192,985.58 = 76,182.32 : x
  2. Step 2: Convert to fraction form
    139,845.88/192,985.58 = 76,182.32/x
  3. Step 3: Cross multiply
    139,845.88x = 192,985.58 × 76,182.32
  4. Step 4: Simplify right side
    139,845.88x = 14,702,089,210.95
  5. Step 5: Solve for x
    x = 14,702,089,210.95/139,845.88
  6. Step 6: Final answer
    x = 105,130.66

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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.