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Finding the Fourth Proportional to 111,297.15, 153,643.26 and 63,541.28

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Solution

The fourth proportional to 111,297.15, 153,643.26 and 63,541.28 is: 87,717.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,297.15 : 153,643.26 = 63,541.28 : x
  2. Step 2: Convert to fraction form
    111,297.15/153,643.26 = 63,541.28/x
  3. Step 3: Cross multiply
    111,297.15x = 153,643.26 × 63,541.28
  4. Step 4: Simplify right side
    111,297.15x = 9,762,688,635.56
  5. Step 5: Solve for x
    x = 9,762,688,635.56/111,297.15
  6. Step 6: Final answer
    x = 87,717.33

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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.