Home / 138,166.04-190,667.79-76,911.26

Finding the Fourth Proportional to 138,166.04, 190,667.79 and 76,911.26

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Solution

The fourth proportional to 138,166.04, 190,667.79 and 76,911.26 is: 106,136.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,166.04 : 190,667.79 = 76,911.26 : x
  2. Step 2: Convert to fraction form
    138,166.04/190,667.79 = 76,911.26/x
  3. Step 3: Cross multiply
    138,166.04x = 190,667.79 × 76,911.26
  4. Step 4: Simplify right side
    138,166.04x = 14,664,499,970.32
  5. Step 5: Solve for x
    x = 14,664,499,970.32/138,166.04
  6. Step 6: Final answer
    x = 106,136.79

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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.