Home / 142,678.10-213,952.46-53,868.60

Finding the Fourth Proportional to 142,678.10, 213,952.46 and 53,868.60

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Solution

The fourth proportional to 142,678.10, 213,952.46 and 53,868.60 is: 80,778.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,678.10 : 213,952.46 = 53,868.60 : x
  2. Step 2: Convert to fraction form
    142,678.10/213,952.46 = 53,868.60/x
  3. Step 3: Cross multiply
    142,678.10x = 213,952.46 × 53,868.60
  4. Step 4: Simplify right side
    142,678.10x = 11,525,319,217.41
  5. Step 5: Solve for x
    x = 11,525,319,217.41/142,678.10
  6. Step 6: Final answer
    x = 80,778.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.