Home / 139,739.40-192,829.50-76,075.92

Finding the Fourth Proportional to 139,739.40, 192,829.50 and 76,075.92

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Solution

The fourth proportional to 139,739.40, 192,829.50 and 76,075.92 is: 104,978.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,739.40 : 192,829.50 = 76,075.92 : x
  2. Step 2: Convert to fraction form
    139,739.40/192,829.50 = 76,075.92/x
  3. Step 3: Cross multiply
    139,739.40x = 192,829.50 × 76,075.92
  4. Step 4: Simplify right side
    139,739.40x = 14,669,681,615.64
  5. Step 5: Solve for x
    x = 14,669,681,615.64/139,739.40
  6. Step 6: Final answer
    x = 104,978.85

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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.