Home / 137,971.44-190,416.32-76,723.69

Finding the Fourth Proportional to 137,971.44, 190,416.32 and 76,723.69

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Solution

The fourth proportional to 137,971.44, 190,416.32 and 76,723.69 is: 105,887.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,971.44 : 190,416.32 = 76,723.69 : x
  2. Step 2: Convert to fraction form
    137,971.44/190,416.32 = 76,723.69/x
  3. Step 3: Cross multiply
    137,971.44x = 190,416.32 × 76,723.69
  4. Step 4: Simplify right side
    137,971.44x = 14,609,442,706.62
  5. Step 5: Solve for x
    x = 14,609,442,706.62/137,971.44
  6. Step 6: Final answer
    x = 105,887.44

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1.5x scale

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.