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Finding the Fourth Proportional to 201,107,820.60, 301,661,730.90 and 79,939,272.60

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Solution

The fourth proportional to 201,107,820.60, 301,661,730.90 and 79,939,272.60 is: 119,908,908.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,107,820.60 : 301,661,730.90 = 79,939,272.60 : x
  2. Step 2: Convert to fraction form
    201,107,820.60/301,661,730.90 = 79,939,272.60/x
  3. Step 3: Cross multiply
    201,107,820.60x = 301,661,730.90 × 79,939,272.60
  4. Step 4: Simplify right side
    201,107,820.60x = 24,114,619,339,402,940
  5. Step 5: Solve for x
    x = 24,114,619,339,402,940/201,107,820.60
  6. Step 6: Final answer
    x = 119,908,908.90

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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.