Home / 134,975.50-186,266.21-78,390.52

Finding the Fourth Proportional to 134,975.50, 186,266.21 and 78,390.52

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Solution

The fourth proportional to 134,975.50, 186,266.21 and 78,390.52 is: 108,178.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,975.50 : 186,266.21 = 78,390.52 : x
  2. Step 2: Convert to fraction form
    134,975.50/186,266.21 = 78,390.52/x
  3. Step 3: Cross multiply
    134,975.50x = 186,266.21 × 78,390.52
  4. Step 4: Simplify right side
    134,975.50x = 14,601,505,060.33
  5. Step 5: Solve for x
    x = 14,601,505,060.33/134,975.50
  6. Step 6: Final answer
    x = 108,178.93

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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.