Home / 142,918,777.40-197,222,220.78-77,728,733.24

Finding the Fourth Proportional to 142,918,777.40, 197,222,220.78 and 77,728,733.24

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Solution

The fourth proportional to 142,918,777.40, 197,222,220.78 and 77,728,733.24 is: 107,262,556.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,918,777.40 : 197,222,220.78 = 77,728,733.24 : x
  2. Step 2: Convert to fraction form
    142,918,777.40/197,222,220.78 = 77,728,733.24/x
  3. Step 3: Cross multiply
    142,918,777.40x = 197,222,220.78 × 77,728,733.24
  4. Step 4: Simplify right side
    142,918,777.40x = 15,329,833,388,009,004
  5. Step 5: Solve for x
    x = 15,329,833,388,009,004/142,918,777.40
  6. Step 6: Final answer
    x = 107,262,556.17

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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.