Home / 143,145,620.20-214,781,415.90-66,429,159.40

Finding the Fourth Proportional to 143,145,620.20, 214,781,415.90 and 66,429,159.40

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Solution

The fourth proportional to 143,145,620.20, 214,781,415.90 and 66,429,159.40 is: 99,672,968.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,145,620.20 : 214,781,415.90 = 66,429,159.40 : x
  2. Step 2: Convert to fraction form
    143,145,620.20/214,781,415.90 = 66,429,159.40/x
  3. Step 3: Cross multiply
    143,145,620.20x = 214,781,415.90 × 66,429,159.40
  4. Step 4: Simplify right side
    143,145,620.20x = 14,267,748,912,978,794
  5. Step 5: Solve for x
    x = 14,267,748,912,978,794/143,145,620.20
  6. Step 6: Final answer
    x = 99,672,968.64

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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.