Home / 111,069.07-153,237.36-63,287.98

Finding the Fourth Proportional to 111,069.07, 153,237.36 and 63,287.98

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Solution

The fourth proportional to 111,069.07, 153,237.36 and 63,287.98 is: 87,315.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,069.07 : 153,237.36 = 63,287.98 : x
  2. Step 2: Convert to fraction form
    111,069.07/153,237.36 = 63,287.98/x
  3. Step 3: Cross multiply
    111,069.07x = 153,237.36 × 63,287.98
  4. Step 4: Simplify right side
    111,069.07x = 9,698,082,974.93
  5. Step 5: Solve for x
    x = 9,698,082,974.93/111,069.07
  6. Step 6: Final answer
    x = 87,315.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.