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Finding the Fourth Proportional to 168,242,595.80, 252,363,893.70 and 145,150,986.20

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Solution

The fourth proportional to 168,242,595.80, 252,363,893.70 and 145,150,986.20 is: 217,726,479.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,242,595.80 : 252,363,893.70 = 145,150,986.20 : x
  2. Step 2: Convert to fraction form
    168,242,595.80/252,363,893.70 = 145,150,986.20/x
  3. Step 3: Cross multiply
    168,242,595.80x = 252,363,893.70 × 145,150,986.20
  4. Step 4: Simplify right side
    168,242,595.80x = 36,630,868,051,826,960
  5. Step 5: Solve for x
    x = 36,630,868,051,826,960/168,242,595.80
  6. Step 6: Final answer
    x = 217,726,479.30

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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.