Home / 158,343.37-218,505.66-86,709.57

Finding the Fourth Proportional to 158,343.37, 218,505.66 and 86,709.57

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Solution

The fourth proportional to 158,343.37, 218,505.66 and 86,709.57 is: 119,654.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,343.37 : 218,505.66 = 86,709.57 : x
  2. Step 2: Convert to fraction form
    158,343.37/218,505.66 = 86,709.57/x
  3. Step 3: Cross multiply
    158,343.37x = 218,505.66 × 86,709.57
  4. Step 4: Simplify right side
    158,343.37x = 18,946,531,821.17
  5. Step 5: Solve for x
    x = 18,946,531,821.17/158,343.37
  6. Step 6: Final answer
    x = 119,654.72

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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.