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Finding the Fourth Proportional to 111,289.63, 153,632.88 and 63,533.74

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Solution

The fourth proportional to 111,289.63, 153,632.88 and 63,533.74 is: 87,706.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,289.63 : 153,632.88 = 63,533.74 : x
  2. Step 2: Convert to fraction form
    111,289.63/153,632.88 = 63,533.74/x
  3. Step 3: Cross multiply
    111,289.63x = 153,632.88 × 63,533.74
  4. Step 4: Simplify right side
    111,289.63x = 9,760,871,453.37
  5. Step 5: Solve for x
    x = 9,760,871,453.37/111,289.63
  6. Step 6: Final answer
    x = 87,706.93

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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.