Home / 128,460,163.44-177,141,024.60-76,239,109.92

Finding the Fourth Proportional to 128,460,163.44, 177,141,024.60 and 76,239,109.92

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Solution

The fourth proportional to 128,460,163.44, 177,141,024.60 and 76,239,109.92 is: 105,130,444.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,460,163.44 : 177,141,024.60 = 76,239,109.92 : x
  2. Step 2: Convert to fraction form
    128,460,163.44/177,141,024.60 = 76,239,109.92/x
  3. Step 3: Cross multiply
    128,460,163.44x = 177,141,024.60 × 76,239,109.92
  4. Step 4: Simplify right side
    128,460,163.44x = 13,505,074,045,820,824
  5. Step 5: Solve for x
    x = 13,505,074,045,820,824/128,460,163.44
  6. Step 6: Final answer
    x = 105,130,444.21

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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.