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Finding the Fourth Proportional to 525,168, 787,752.96 and 131,184

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Solution

The fourth proportional to 525,168, 787,752.96 and 131,184 is: 196,776.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,168 : 787,752.96 = 131,184 : x
  2. Step 2: Convert to fraction form
    525,168/787,752.96 = 131,184/x
  3. Step 3: Cross multiply
    525,168x = 787,752.96 × 131,184
  4. Step 4: Simplify right side
    525,168x = 103,340,584,304.64
  5. Step 5: Solve for x
    x = 103,340,584,304.64/525,168
  6. Step 6: Final answer
    x = 196,776.24

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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.