Home / 103,612,574.72-143,112,583.68-77,623,362.56

Finding the Fourth Proportional to 103,612,574.72, 143,112,583.68 and 77,623,362.56

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Solution

The fourth proportional to 103,612,574.72, 143,112,583.68 and 77,623,362.56 is: 107,215,557.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,612,574.72 : 143,112,583.68 = 77,623,362.56 : x
  2. Step 2: Convert to fraction form
    103,612,574.72/143,112,583.68 = 77,623,362.56/x
  3. Step 3: Cross multiply
    103,612,574.72x = 143,112,583.68 × 77,623,362.56
  4. Step 4: Simplify right side
    103,612,574.72x = 11,108,879,969,890,980
  5. Step 5: Solve for x
    x = 11,108,879,969,890,980/103,612,574.72
  6. Step 6: Final answer
    x = 107,215,557.57

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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.