Home / 142,289.29-213,544.10-53,623.45

Finding the Fourth Proportional to 142,289.29, 213,544.10 and 53,623.45

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Solution

The fourth proportional to 142,289.29, 213,544.10 and 53,623.45 is: 80,476.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,289.29 : 213,544.10 = 53,623.45 : x
  2. Step 2: Convert to fraction form
    142,289.29/213,544.10 = 53,623.45/x
  3. Step 3: Cross multiply
    142,289.29x = 213,544.10 × 53,623.45
  4. Step 4: Simplify right side
    142,289.29x = 11,450,971,369.15
  5. Step 5: Solve for x
    x = 11,450,971,369.15/142,289.29
  6. Step 6: Final answer
    x = 80,476.69

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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.