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Finding the Fourth Proportional to 196,655,907.60, 295,162,320.60 and 99,679,078.80

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Solution

The fourth proportional to 196,655,907.60, 295,162,320.60 and 99,679,078.80 is: 149,609,073.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,655,907.60 : 295,162,320.60 = 99,679,078.80 : x
  2. Step 2: Convert to fraction form
    196,655,907.60/295,162,320.60 = 99,679,078.80/x
  3. Step 3: Cross multiply
    196,655,907.60x = 295,162,320.60 × 99,679,078.80
  4. Step 4: Simplify right side
    196,655,907.60x = 29,421,508,213,878,264
  5. Step 5: Solve for x
    x = 29,421,508,213,878,264/196,655,907.60
  6. Step 6: Final answer
    x = 149,609,073.90

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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.