Home / 136,608.30-188,518.64-76,179.69

Finding the Fourth Proportional to 136,608.30, 188,518.64 and 76,179.69

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Solution

The fourth proportional to 136,608.30, 188,518.64 and 76,179.69 is: 105,127.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,608.30 : 188,518.64 = 76,179.69 : x
  2. Step 2: Convert to fraction form
    136,608.30/188,518.64 = 76,179.69/x
  3. Step 3: Cross multiply
    136,608.30x = 188,518.64 × 76,179.69
  4. Step 4: Simplify right side
    136,608.30x = 14,361,291,173.52
  5. Step 5: Solve for x
    x = 14,361,291,173.52/136,608.30
  6. Step 6: Final answer
    x = 105,127.52

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1.5x scale

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.