Home / 281,431,111.47-422,144,541.64-84,693,677.69

Finding the Fourth Proportional to 281,431,111.47, 422,144,541.64 and 84,693,677.69

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Solution

The fourth proportional to 281,431,111.47, 422,144,541.64 and 84,693,677.69 is: 127,039,876.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,431,111.47 : 422,144,541.64 = 84,693,677.69 : x
  2. Step 2: Convert to fraction form
    281,431,111.47/422,144,541.64 = 84,693,677.69/x
  3. Step 3: Cross multiply
    281,431,111.47x = 422,144,541.64 × 84,693,677.69
  4. Step 4: Simplify right side
    281,431,111.47x = 35,752,973,749,412,172
  5. Step 5: Solve for x
    x = 35,752,973,749,412,172/281,431,111.47
  6. Step 6: Final answer
    x = 127,039,876.87

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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.