Home / 137,720,328.67-190,052,175.85-78,181,106.91

Finding the Fourth Proportional to 137,720,328.67, 190,052,175.85 and 78,181,106.91

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Solution

The fourth proportional to 137,720,328.67, 190,052,175.85 and 78,181,106.91 is: 107,888,861.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,720,328.67 : 190,052,175.85 = 78,181,106.91 : x
  2. Step 2: Convert to fraction form
    137,720,328.67/190,052,175.85 = 78,181,106.91/x
  3. Step 3: Cross multiply
    137,720,328.67x = 190,052,175.85 × 78,181,106.91
  4. Step 4: Simplify right side
    137,720,328.67x = 14,858,489,478,606,968
  5. Step 5: Solve for x
    x = 14,858,489,478,606,968/137,720,328.67
  6. Step 6: Final answer
    x = 107,888,861.59

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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.