Home / 105,682,056.40-158,373,785.40-78,173,678.80

Finding the Fourth Proportional to 105,682,056.40, 158,373,785.40 and 78,173,678.80

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Solution

The fourth proportional to 105,682,056.40, 158,373,785.40 and 78,173,678.80 is: 117,150,080.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,682,056.40 : 158,373,785.40 = 78,173,678.80 : x
  2. Step 2: Convert to fraction form
    105,682,056.40/158,373,785.40 = 78,173,678.80/x
  3. Step 3: Cross multiply
    105,682,056.40x = 158,373,785.40 × 78,173,678.80
  4. Step 4: Simplify right side
    105,682,056.40x = 12,380,661,430,199,730
  5. Step 5: Solve for x
    x = 12,380,661,430,199,730/105,682,056.40
  6. Step 6: Final answer
    x = 117,150,080.65

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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.