Home / 158,343.15-218,505.36-86,709.30

Finding the Fourth Proportional to 158,343.15, 218,505.36 and 86,709.30

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Solution

The fourth proportional to 158,343.15, 218,505.36 and 86,709.30 is: 119,654.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,343.15 : 218,505.36 = 86,709.30 : x
  2. Step 2: Convert to fraction form
    158,343.15/218,505.36 = 86,709.30/x
  3. Step 3: Cross multiply
    158,343.15x = 218,505.36 × 86,709.30
  4. Step 4: Simplify right side
    158,343.15x = 18,946,446,811.85
  5. Step 5: Solve for x
    x = 18,946,446,811.85/158,343.15
  6. Step 6: Final answer
    x = 119,654.35

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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.