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Finding the Fourth Proportional to 105,234.84, 145,220.40 and 62,771.40

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Solution

The fourth proportional to 105,234.84, 145,220.40 and 62,771.40 is: 86,622.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,234.84 : 145,220.40 = 62,771.40 : x
  2. Step 2: Convert to fraction form
    105,234.84/145,220.40 = 62,771.40/x
  3. Step 3: Cross multiply
    105,234.84x = 145,220.40 × 62,771.40
  4. Step 4: Simplify right side
    105,234.84x = 9,115,687,816.56
  5. Step 5: Solve for x
    x = 9,115,687,816.56/105,234.84
  6. Step 6: Final answer
    x = 86,622.34

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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.