Home / 144,518,325.06-199,435,507.74-78,438,847.44

Finding the Fourth Proportional to 144,518,325.06, 199,435,507.74 and 78,438,847.44

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Solution

The fourth proportional to 144,518,325.06, 199,435,507.74 and 78,438,847.44 is: 108,245,728.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,518,325.06 : 199,435,507.74 = 78,438,847.44 : x
  2. Step 2: Convert to fraction form
    144,518,325.06/199,435,507.74 = 78,438,847.44/x
  3. Step 3: Cross multiply
    144,518,325.06x = 199,435,507.74 × 78,438,847.44
  4. Step 4: Simplify right side
    144,518,325.06x = 15,643,491,365,736,800
  5. Step 5: Solve for x
    x = 15,643,491,365,736,800/144,518,325.06
  6. Step 6: Final answer
    x = 108,245,728.42

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1.5x scale

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.