Home / 105,285,957.96-145,245,669.36-68,128,236.24

Finding the Fourth Proportional to 105,285,957.96, 145,245,669.36 and 68,128,236.24

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Solution

The fourth proportional to 105,285,957.96, 145,245,669.36 and 68,128,236.24 is: 93,985,289.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,285,957.96 : 145,245,669.36 = 68,128,236.24 : x
  2. Step 2: Convert to fraction form
    105,285,957.96/145,245,669.36 = 68,128,236.24/x
  3. Step 3: Cross multiply
    105,285,957.96x = 145,245,669.36 × 68,128,236.24
  4. Step 4: Simplify right side
    105,285,957.96x = 9,895,331,274,995,010
  5. Step 5: Solve for x
    x = 9,895,331,274,995,010/105,285,957.96
  6. Step 6: Final answer
    x = 93,985,289.84

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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.