Home / 136,448.30-188,312.50-76,028.78

Finding the Fourth Proportional to 136,448.30, 188,312.50 and 76,028.78

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Solution

The fourth proportional to 136,448.30, 188,312.50 and 76,028.78 is: 104,927.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,448.30 : 188,312.50 = 76,028.78 : x
  2. Step 2: Convert to fraction form
    136,448.30/188,312.50 = 76,028.78/x
  3. Step 3: Cross multiply
    136,448.30x = 188,312.50 × 76,028.78
  4. Step 4: Simplify right side
    136,448.30x = 14,317,169,633.75
  5. Step 5: Solve for x
    x = 14,317,169,633.75/136,448.30
  6. Step 6: Final answer
    x = 104,927.43

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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.