Home / 149,120,466,681.96-205,786,236,151.08-80,531,873,196.48

Finding the Fourth Proportional to 149,120,466,681.96, 205,786,236,151.08 and 80,531,873,196.48

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Solution

The fourth proportional to 149,120,466,681.96, 205,786,236,151.08 and 80,531,873,196.48 is: 111,133,980,760.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,120,466,681.96 : 205,786,236,151.08 = 80,531,873,196.48 : x
  2. Step 2: Convert to fraction form
    149,120,466,681.96/205,786,236,151.08 = 80,531,873,196.48/x
  3. Step 3: Cross multiply
    149,120,466,681.96x = 205,786,236,151.08 × 80,531,873,196.48
  4. Step 4: Simplify right side
    149,120,466,681.96x = 16,572,351,075,299,660,660,736
  5. Step 5: Solve for x
    x = 16,572,351,075,299,660,660,736/149,120,466,681.96
  6. Step 6: Final answer
    x = 111,133,980,760.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.