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Finding the Fourth Proportional to 111,029.76, 153,203.20 and 63,283.20

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Solution

The fourth proportional to 111,029.76, 153,203.20 and 63,283.20 is: 87,320.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,029.76 : 153,203.20 = 63,283.20 : x
  2. Step 2: Convert to fraction form
    111,029.76/153,203.20 = 63,283.20/x
  3. Step 3: Cross multiply
    111,029.76x = 153,203.20 × 63,283.20
  4. Step 4: Simplify right side
    111,029.76x = 9,695,188,746.24
  5. Step 5: Solve for x
    x = 9,695,188,746.24/111,029.76
  6. Step 6: Final answer
    x = 87,320.63

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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.