Home / 136,718.12-188,670.38-76,285.24

Finding the Fourth Proportional to 136,718.12, 188,670.38 and 76,285.24

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Solution

The fourth proportional to 136,718.12, 188,670.38 and 76,285.24 is: 105,273.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,718.12 : 188,670.38 = 76,285.24 : x
  2. Step 2: Convert to fraction form
    136,718.12/188,670.38 = 76,285.24/x
  3. Step 3: Cross multiply
    136,718.12x = 188,670.38 × 76,285.24
  4. Step 4: Simplify right side
    136,718.12x = 14,392,765,219.19
  5. Step 5: Solve for x
    x = 14,392,765,219.19/136,718.12
  6. Step 6: Final answer
    x = 105,273.28

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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.