Home / 79,182,015.20-118,773,022.80-66,427,431.20

Finding the Fourth Proportional to 79,182,015.20, 118,773,022.80 and 66,427,431.20

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Solution

The fourth proportional to 79,182,015.20, 118,773,022.80 and 66,427,431.20 is: 99,641,146.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,182,015.20 : 118,773,022.80 = 66,427,431.20 : x
  2. Step 2: Convert to fraction form
    79,182,015.20/118,773,022.80 = 66,427,431.20/x
  3. Step 3: Cross multiply
    79,182,015.20x = 118,773,022.80 × 66,427,431.20
  4. Step 4: Simplify right side
    79,182,015.20x = 7,889,786,800,463,032
  5. Step 5: Solve for x
    x = 7,889,786,800,463,032/79,182,015.20
  6. Step 6: Final answer
    x = 99,641,146.80

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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.