Home / 103,538,112.13-142,885,584.53-57,131,355.34

Finding the Fourth Proportional to 103,538,112.13, 142,885,584.53 and 57,131,355.34

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Solution

The fourth proportional to 103,538,112.13, 142,885,584.53 and 57,131,355.34 is: 78,842,920.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,538,112.13 : 142,885,584.53 = 57,131,355.34 : x
  2. Step 2: Convert to fraction form
    103,538,112.13/142,885,584.53 = 57,131,355.34/x
  3. Step 3: Cross multiply
    103,538,112.13x = 142,885,584.53 × 57,131,355.34
  4. Step 4: Simplify right side
    103,538,112.13x = 8,163,247,102,747,037
  5. Step 5: Solve for x
    x = 8,163,247,102,747,037/103,538,112.13
  6. Step 6: Final answer
    x = 78,842,920.11

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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.