Home / 143,145,627.70-214,781,427.15-66,429,166.90

Finding the Fourth Proportional to 143,145,627.70, 214,781,427.15 and 66,429,166.90

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Solution

The fourth proportional to 143,145,627.70, 214,781,427.15 and 66,429,166.90 is: 99,672,979.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,145,627.70 : 214,781,427.15 = 66,429,166.90 : x
  2. Step 2: Convert to fraction form
    143,145,627.70/214,781,427.15 = 66,429,166.90/x
  3. Step 3: Cross multiply
    143,145,627.70x = 214,781,427.15 × 66,429,166.90
  4. Step 4: Simplify right side
    143,145,627.70x = 14,267,751,271,167,542
  5. Step 5: Solve for x
    x = 14,267,751,271,167,542/143,145,627.70
  6. Step 6: Final answer
    x = 99,672,979.89

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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.