Home / 190,605,457.38-286,029,109.74-81,431,449.72

Finding the Fourth Proportional to 190,605,457.38, 286,029,109.74 and 81,431,449.72

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Solution

The fourth proportional to 190,605,457.38, 286,029,109.74 and 81,431,449.72 is: 122,198,836.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,605,457.38 : 286,029,109.74 = 81,431,449.72 : x
  2. Step 2: Convert to fraction form
    190,605,457.38/286,029,109.74 = 81,431,449.72/x
  3. Step 3: Cross multiply
    190,605,457.38x = 286,029,109.74 × 81,431,449.72
  4. Step 4: Simplify right side
    190,605,457.38x = 23,291,765,068,249,172
  5. Step 5: Solve for x
    x = 23,291,765,068,249,172/190,605,457.38
  6. Step 6: Final answer
    x = 122,198,836.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.