Home / 100,436,990.67-150,362,819.84-74,643,501.74

Finding the Fourth Proportional to 100,436,990.67, 150,362,819.84 and 74,643,501.74

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Solution

The fourth proportional to 100,436,990.67, 150,362,819.84 and 74,643,501.74 is: 111,747,746.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,436,990.67 : 150,362,819.84 = 74,643,501.74 : x
  2. Step 2: Convert to fraction form
    100,436,990.67/150,362,819.84 = 74,643,501.74/x
  3. Step 3: Cross multiply
    100,436,990.67x = 150,362,819.84 × 74,643,501.74
  4. Step 4: Simplify right side
    100,436,990.67x = 11,223,607,403,793,142
  5. Step 5: Solve for x
    x = 11,223,607,403,793,142/100,436,990.67
  6. Step 6: Final answer
    x = 111,747,746.81

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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.