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Finding the Fourth Proportional to 112,461.20, 168,497.40 and 53,169.20

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Solution

The fourth proportional to 112,461.20, 168,497.40 and 53,169.20 is: 79,661.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,461.20 : 168,497.40 = 53,169.20 : x
  2. Step 2: Convert to fraction form
    112,461.20/168,497.40 = 53,169.20/x
  3. Step 3: Cross multiply
    112,461.20x = 168,497.40 × 53,169.20
  4. Step 4: Simplify right side
    112,461.20x = 8,958,871,960.08
  5. Step 5: Solve for x
    x = 8,958,871,960.08/112,461.20
  6. Step 6: Final answer
    x = 79,661.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.