Home / 203,630,603.10-305,445,904.65-67,315,986.60

Finding the Fourth Proportional to 203,630,603.10, 305,445,904.65 and 67,315,986.60

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Solution

The fourth proportional to 203,630,603.10, 305,445,904.65 and 67,315,986.60 is: 100,973,979.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,630,603.10 : 305,445,904.65 = 67,315,986.60 : x
  2. Step 2: Convert to fraction form
    203,630,603.10/305,445,904.65 = 67,315,986.60/x
  3. Step 3: Cross multiply
    203,630,603.10x = 305,445,904.65 × 67,315,986.60
  4. Step 4: Simplify right side
    203,630,603.10x = 20,561,392,424,444,276
  5. Step 5: Solve for x
    x = 20,561,392,424,444,276/203,630,603.10
  6. Step 6: Final answer
    x = 100,973,979.90

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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.