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Finding the Fourth Proportional to 99,873,999.60, 149,810,999.40 and 28,070,415.60

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Solution

The fourth proportional to 99,873,999.60, 149,810,999.40 and 28,070,415.60 is: 42,105,623.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,873,999.60 : 149,810,999.40 = 28,070,415.60 : x
  2. Step 2: Convert to fraction form
    99,873,999.60/149,810,999.40 = 28,070,415.60/x
  3. Step 3: Cross multiply
    99,873,999.60x = 149,810,999.40 × 28,070,415.60
  4. Step 4: Simplify right side
    99,873,999.60x = 4,205,257,014,609,351
  5. Step 5: Solve for x
    x = 4,205,257,014,609,351/99,873,999.60
  6. Step 6: Final answer
    x = 42,105,623.40

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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.