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Finding the Fourth Proportional to 99,886,496.80, 149,577,802.80 and 79,731,104.80

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Solution

The fourth proportional to 99,886,496.80, 149,577,802.80 and 79,731,104.80 is: 119,395,552.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,886,496.80 : 149,577,802.80 = 79,731,104.80 : x
  2. Step 2: Convert to fraction form
    99,886,496.80/149,577,802.80 = 79,731,104.80/x
  3. Step 3: Cross multiply
    99,886,496.80x = 149,577,802.80 × 79,731,104.80
  4. Step 4: Simplify right side
    99,886,496.80x = 11,926,003,470,800,534
  5. Step 5: Solve for x
    x = 11,926,003,470,800,534/99,886,496.80
  6. Step 6: Final answer
    x = 119,395,552.48

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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.