Home / 138,200,426,705.79-190,700,071,464.46-76,392,647,064.45

Finding the Fourth Proportional to 138,200,426,705.79, 190,700,071,464.46 and 76,392,647,064.45

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Solution

The fourth proportional to 138,200,426,705.79, 190,700,071,464.46 and 76,392,647,064.45 is: 105,412,722,679.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,200,426,705.79 : 190,700,071,464.46 = 76,392,647,064.45 : x
  2. Step 2: Convert to fraction form
    138,200,426,705.79/190,700,071,464.46 = 76,392,647,064.45/x
  3. Step 3: Cross multiply
    138,200,426,705.79x = 190,700,071,464.46 × 76,392,647,064.45
  4. Step 4: Simplify right side
    138,200,426,705.79x = 14,568,083,254,549,883,650,048
  5. Step 5: Solve for x
    x = 14,568,083,254,549,883,650,048/138,200,426,705.79
  6. Step 6: Final answer
    x = 105,412,722,679.67

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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.