Home / 111,427.35-153,753.49-63,671.47

Finding the Fourth Proportional to 111,427.35, 153,753.49 and 63,671.47

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Solution

The fourth proportional to 111,427.35, 153,753.49 and 63,671.47 is: 87,857.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,427.35 : 153,753.49 = 63,671.47 : x
  2. Step 2: Convert to fraction form
    111,427.35/153,753.49 = 63,671.47/x
  3. Step 3: Cross multiply
    111,427.35x = 153,753.49 × 63,671.47
  4. Step 4: Simplify right side
    111,427.35x = 9,789,709,638.81
  5. Step 5: Solve for x
    x = 9,789,709,638.81/111,427.35
  6. Step 6: Final answer
    x = 87,857.34

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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.