Home / 137,720,322.86-190,052,167.79-78,181,101.07

Finding the Fourth Proportional to 137,720,322.86, 190,052,167.79 and 78,181,101.07

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Solution

The fourth proportional to 137,720,322.86, 190,052,167.79 and 78,181,101.07 is: 107,888,853.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,720,322.86 : 190,052,167.79 = 78,181,101.07 : x
  2. Step 2: Convert to fraction form
    137,720,322.86/190,052,167.79 = 78,181,101.07/x
  3. Step 3: Cross multiply
    137,720,322.86x = 190,052,167.79 × 78,181,101.07
  4. Step 4: Simplify right side
    137,720,322.86x = 14,858,487,738,282,910
  5. Step 5: Solve for x
    x = 14,858,487,738,282,910/137,720,322.86
  6. Step 6: Final answer
    x = 107,888,853.51

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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.