Home / 128,501,474.36-177,160,761.06-102,127,894.61

Finding the Fourth Proportional to 128,501,474.36, 177,160,761.06 and 102,127,894.61

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Solution

The fourth proportional to 128,501,474.36, 177,160,761.06 and 102,127,894.61 is: 140,800,373.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,501,474.36 : 177,160,761.06 = 102,127,894.61 : x
  2. Step 2: Convert to fraction form
    128,501,474.36/177,160,761.06 = 102,127,894.61/x
  3. Step 3: Cross multiply
    128,501,474.36x = 177,160,761.06 × 102,127,894.61
  4. Step 4: Simplify right side
    128,501,474.36x = 18,093,055,534,563,072
  5. Step 5: Solve for x
    x = 18,093,055,534,563,072/128,501,474.36
  6. Step 6: Final answer
    x = 140,800,373.11

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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.