Home / 145,936.50-201,392.37-78,868.50

Finding the Fourth Proportional to 145,936.50, 201,392.37 and 78,868.50

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Solution

The fourth proportional to 145,936.50, 201,392.37 and 78,868.50 is: 108,838.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,936.50 : 201,392.37 = 78,868.50 : x
  2. Step 2: Convert to fraction form
    145,936.50/201,392.37 = 78,868.50/x
  3. Step 3: Cross multiply
    145,936.50x = 201,392.37 × 78,868.50
  4. Step 4: Simplify right side
    145,936.50x = 15,883,514,133.35
  5. Step 5: Solve for x
    x = 15,883,514,133.35/145,936.50
  6. Step 6: Final answer
    x = 108,838.53

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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.