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Finding the Fourth Proportional to 146,793,978.70, 220,190,968.05 and 98,421,037.90

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Solution

The fourth proportional to 146,793,978.70, 220,190,968.05 and 98,421,037.90 is: 147,631,556.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,793,978.70 : 220,190,968.05 = 98,421,037.90 : x
  2. Step 2: Convert to fraction form
    146,793,978.70/220,190,968.05 = 98,421,037.90/x
  3. Step 3: Cross multiply
    146,793,978.70x = 220,190,968.05 × 98,421,037.90
  4. Step 4: Simplify right side
    146,793,978.70x = 21,671,423,611,686,740
  5. Step 5: Solve for x
    x = 21,671,423,611,686,740/146,793,978.70
  6. Step 6: Final answer
    x = 147,631,556.85

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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.