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Finding the Fourth Proportional to 111,087.84, 153,310.68 and 63,328.08

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Solution

The fourth proportional to 111,087.84, 153,310.68 and 63,328.08 is: 87,398.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,087.84 : 153,310.68 = 63,328.08 : x
  2. Step 2: Convert to fraction form
    111,087.84/153,310.68 = 63,328.08/x
  3. Step 3: Cross multiply
    111,087.84x = 153,310.68 × 63,328.08
  4. Step 4: Simplify right side
    111,087.84x = 9,708,871,007.89
  5. Step 5: Solve for x
    x = 9,708,871,007.89/111,087.84
  6. Step 6: Final answer
    x = 87,398.14

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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.