Home / 136,825.08-188,816.83-76,396.76

Finding the Fourth Proportional to 136,825.08, 188,816.83 and 76,396.76

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Solution

The fourth proportional to 136,825.08, 188,816.83 and 76,396.76 is: 105,426.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,825.08 : 188,816.83 = 76,396.76 : x
  2. Step 2: Convert to fraction form
    136,825.08/188,816.83 = 76,396.76/x
  3. Step 3: Cross multiply
    136,825.08x = 188,816.83 × 76,396.76
  4. Step 4: Simplify right side
    136,825.08x = 14,424,994,045.47
  5. Step 5: Solve for x
    x = 14,424,994,045.47/136,825.08
  6. Step 6: Final answer
    x = 105,426.53

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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.