Home / 142,040.16-213,053.32-53,286.75

Finding the Fourth Proportional to 142,040.16, 213,053.32 and 53,286.75

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Solution

The fourth proportional to 142,040.16, 213,053.32 and 53,286.75 is: 79,927.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,040.16 : 213,053.32 = 53,286.75 : x
  2. Step 2: Convert to fraction form
    142,040.16/213,053.32 = 53,286.75/x
  3. Step 3: Cross multiply
    142,040.16x = 213,053.32 × 53,286.75
  4. Step 4: Simplify right side
    142,040.16x = 11,352,918,999.51
  5. Step 5: Solve for x
    x = 11,352,918,999.51/142,040.16
  6. Step 6: Final answer
    x = 79,927.53

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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.