Home / 142,287.81-213,440.07-53,542.08

Finding the Fourth Proportional to 142,287.81, 213,440.07 and 53,542.08

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Solution

The fourth proportional to 142,287.81, 213,440.07 and 53,542.08 is: 80,316.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,287.81 : 213,440.07 = 53,542.08 : x
  2. Step 2: Convert to fraction form
    142,287.81/213,440.07 = 53,542.08/x
  3. Step 3: Cross multiply
    142,287.81x = 213,440.07 × 53,542.08
  4. Step 4: Simplify right side
    142,287.81x = 11,428,025,303.15
  5. Step 5: Solve for x
    x = 11,428,025,303.15/142,287.81
  6. Step 6: Final answer
    x = 80,316.26

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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.