Home / 142,110.40-213,018.72-53,301.28

Finding the Fourth Proportional to 142,110.40, 213,018.72 and 53,301.28

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Solution

The fourth proportional to 142,110.40, 213,018.72 and 53,301.28 is: 79,896.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,110.40 : 213,018.72 = 53,301.28 : x
  2. Step 2: Convert to fraction form
    142,110.40/213,018.72 = 53,301.28/x
  3. Step 3: Cross multiply
    142,110.40x = 213,018.72 × 53,301.28
  4. Step 4: Simplify right side
    142,110.40x = 11,354,170,439.96
  5. Step 5: Solve for x
    x = 11,354,170,439.96/142,110.40
  6. Step 6: Final answer
    x = 79,896.83

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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.