Home / 100,787,489.32-139,012,478.12-76,008,720.44

Finding the Fourth Proportional to 100,787,489.32, 139,012,478.12 and 76,008,720.44

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Solution

The fourth proportional to 100,787,489.32, 139,012,478.12 and 76,008,720.44 is: 104,836,033.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,787,489.32 : 139,012,478.12 = 76,008,720.44 : x
  2. Step 2: Convert to fraction form
    100,787,489.32/139,012,478.12 = 76,008,720.44/x
  3. Step 3: Cross multiply
    100,787,489.32x = 139,012,478.12 × 76,008,720.44
  4. Step 4: Simplify right side
    100,787,489.32x = 10,566,160,587,094,696
  5. Step 5: Solve for x
    x = 10,566,160,587,094,696/100,787,489.32
  6. Step 6: Final answer
    x = 104,836,033.31

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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.