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Finding the Fourth Proportional to 192,011.90, 264,991.32 and 105,987.74

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Solution

The fourth proportional to 192,011.90, 264,991.32 and 105,987.74 is: 146,271.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,011.90 : 264,991.32 = 105,987.74 : x
  2. Step 2: Convert to fraction form
    192,011.90/264,991.32 = 105,987.74/x
  3. Step 3: Cross multiply
    192,011.90x = 264,991.32 × 105,987.74
  4. Step 4: Simplify right side
    192,011.90x = 28,085,831,126.42
  5. Step 5: Solve for x
    x = 28,085,831,126.42/192,011.90
  6. Step 6: Final answer
    x = 146,271.30

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1.5x scale

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.