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Finding the Fourth Proportional to 96,699.78, 145,043.70 and 30,130.44

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Solution

The fourth proportional to 96,699.78, 145,043.70 and 30,130.44 is: 45,193.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,699.78 : 145,043.70 = 30,130.44 : x
  2. Step 2: Convert to fraction form
    96,699.78/145,043.70 = 30,130.44/x
  3. Step 3: Cross multiply
    96,699.78x = 145,043.70 × 30,130.44
  4. Step 4: Simplify right side
    96,699.78x = 4,370,230,500.23
  5. Step 5: Solve for x
    x = 4,370,230,500.23/96,699.78
  6. Step 6: Final answer
    x = 45,193.80

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1.5x scale

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.