Home / 111,128.24-153,355.40-63,382.39

Finding the Fourth Proportional to 111,128.24, 153,355.40 and 63,382.39

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Solution

The fourth proportional to 111,128.24, 153,355.40 and 63,382.39 is: 87,466.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,128.24 : 153,355.40 = 63,382.39 : x
  2. Step 2: Convert to fraction form
    111,128.24/153,355.40 = 63,382.39/x
  3. Step 3: Cross multiply
    111,128.24x = 153,355.40 × 63,382.39
  4. Step 4: Simplify right side
    111,128.24x = 9,720,031,308.79
  5. Step 5: Solve for x
    x = 9,720,031,308.79/111,128.24
  6. Step 6: Final answer
    x = 87,466.80

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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.