Home / 260,364.06-390,405.60-118,131.72

Finding the Fourth Proportional to 260,364.06, 390,405.60 and 118,131.72

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Solution

The fourth proportional to 260,364.06, 390,405.60 and 118,131.72 is: 177,133.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,364.06 : 390,405.60 = 118,131.72 : x
  2. Step 2: Convert to fraction form
    260,364.06/390,405.60 = 118,131.72/x
  3. Step 3: Cross multiply
    260,364.06x = 390,405.60 × 118,131.72
  4. Step 4: Simplify right side
    260,364.06x = 46,119,285,025.63
  5. Step 5: Solve for x
    x = 46,119,285,025.63/260,364.06
  6. Step 6: Final answer
    x = 177,133.84

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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.