Home / 134,969.75-186,258.27-78,384.77

Finding the Fourth Proportional to 134,969.75, 186,258.27 and 78,384.77

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Solution

The fourth proportional to 134,969.75, 186,258.27 and 78,384.77 is: 108,170.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,969.75 : 186,258.27 = 78,384.77 : x
  2. Step 2: Convert to fraction form
    134,969.75/186,258.27 = 78,384.77/x
  3. Step 3: Cross multiply
    134,969.75x = 186,258.27 × 78,384.77
  4. Step 4: Simplify right side
    134,969.75x = 14,599,811,654.55
  5. Step 5: Solve for x
    x = 14,599,811,654.55/134,969.75
  6. Step 6: Final answer
    x = 108,170.99

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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.