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Finding the Fourth Proportional to 100,939,216.70, 151,410,026.56 and 28,151,568.80

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Solution

The fourth proportional to 100,939,216.70, 151,410,026.56 and 28,151,568.80 is: 42,227,688.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,939,216.70 : 151,410,026.56 = 28,151,568.80 : x
  2. Step 2: Convert to fraction form
    100,939,216.70/151,410,026.56 = 28,151,568.80/x
  3. Step 3: Cross multiply
    100,939,216.70x = 151,410,026.56 × 28,151,568.80
  4. Step 4: Simplify right side
    100,939,216.70x = 4,262,429,779,713,667.50
  5. Step 5: Solve for x
    x = 4,262,429,779,713,667.50/100,939,216.70
  6. Step 6: Final answer
    x = 42,227,688.30

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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.