Home / 136,478.71-188,338.69-76,051.90

Finding the Fourth Proportional to 136,478.71, 188,338.69 and 76,051.90

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Solution

The fourth proportional to 136,478.71, 188,338.69 and 76,051.90 is: 104,950.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,478.71 : 188,338.69 = 76,051.90 : x
  2. Step 2: Convert to fraction form
    136,478.71/188,338.69 = 76,051.90/x
  3. Step 3: Cross multiply
    136,478.71x = 188,338.69 × 76,051.90
  4. Step 4: Simplify right side
    136,478.71x = 14,323,515,218.01
  5. Step 5: Solve for x
    x = 14,323,515,218.01/136,478.71
  6. Step 6: Final answer
    x = 104,950.55

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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.