Home / 99,643,469.30-149,488,823.55-51,128,810.90

Finding the Fourth Proportional to 99,643,469.30, 149,488,823.55 and 51,128,810.90

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Solution

The fourth proportional to 99,643,469.30, 149,488,823.55 and 51,128,810.90 is: 76,705,335.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,643,469.30 : 149,488,823.55 = 51,128,810.90 : x
  2. Step 2: Convert to fraction form
    99,643,469.30/149,488,823.55 = 51,128,810.90/x
  3. Step 3: Cross multiply
    99,643,469.30x = 149,488,823.55 × 51,128,810.90
  4. Step 4: Simplify right side
    99,643,469.30x = 7,643,185,790,951,417
  5. Step 5: Solve for x
    x = 7,643,185,790,951,417/99,643,469.30
  6. Step 6: Final answer
    x = 76,705,335.98

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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.