Home / 134,766.40-186,014.64-78,196

Finding the Fourth Proportional to 134,766.40, 186,014.64 and 78,196

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Solution

The fourth proportional to 134,766.40, 186,014.64 and 78,196 is: 107,931.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,766.40 : 186,014.64 = 78,196 : x
  2. Step 2: Convert to fraction form
    134,766.40/186,014.64 = 78,196/x
  3. Step 3: Cross multiply
    134,766.40x = 186,014.64 × 78,196
  4. Step 4: Simplify right side
    134,766.40x = 14,545,600,789.44
  5. Step 5: Solve for x
    x = 14,545,600,789.44/134,766.40
  6. Step 6: Final answer
    x = 107,931.95

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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.