Home / 111,485.03-153,805.55-63,712.76

Finding the Fourth Proportional to 111,485.03, 153,805.55 and 63,712.76

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Solution

The fourth proportional to 111,485.03, 153,805.55 and 63,712.76 is: 87,898.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,485.03 : 153,805.55 = 63,712.76 : x
  2. Step 2: Convert to fraction form
    111,485.03/153,805.55 = 63,712.76/x
  3. Step 3: Cross multiply
    111,485.03x = 153,805.55 × 63,712.76
  4. Step 4: Simplify right side
    111,485.03x = 9,799,375,006.23
  5. Step 5: Solve for x
    x = 9,799,375,006.23/111,485.03
  6. Step 6: Final answer
    x = 87,898.58

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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.