Home / 142,100.40-213,003.72-53,291.28

Finding the Fourth Proportional to 142,100.40, 213,003.72 and 53,291.28

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Solution

The fourth proportional to 142,100.40, 213,003.72 and 53,291.28 is: 79,881.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,100.40 : 213,003.72 = 53,291.28 : x
  2. Step 2: Convert to fraction form
    142,100.40/213,003.72 = 53,291.28/x
  3. Step 3: Cross multiply
    142,100.40x = 213,003.72 × 53,291.28
  4. Step 4: Simplify right side
    142,100.40x = 11,351,240,883.56
  5. Step 5: Solve for x
    x = 11,351,240,883.56/142,100.40
  6. Step 6: Final answer
    x = 79,881.84

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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.