Home / 131,621,378.38-181,635,268.86-72,882,782.36

Finding the Fourth Proportional to 131,621,378.38, 181,635,268.86 and 72,882,782.36

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Solution

The fourth proportional to 131,621,378.38, 181,635,268.86 and 72,882,782.36 is: 100,577,003.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,621,378.38 : 181,635,268.86 = 72,882,782.36 : x
  2. Step 2: Convert to fraction form
    131,621,378.38/181,635,268.86 = 72,882,782.36/x
  3. Step 3: Cross multiply
    131,621,378.38x = 181,635,268.86 × 72,882,782.36
  4. Step 4: Simplify right side
    131,621,378.38x = 13,238,083,769,223,466
  5. Step 5: Solve for x
    x = 13,238,083,769,223,466/131,621,378.38
  6. Step 6: Final answer
    x = 100,577,003.01

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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.