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Finding the Fourth Proportional to 105,144.60, 145,102.95 and 59,821.46

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Solution

The fourth proportional to 105,144.60, 145,102.95 and 59,821.46 is: 82,555.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,144.60 : 145,102.95 = 59,821.46 : x
  2. Step 2: Convert to fraction form
    105,144.60/145,102.95 = 59,821.46/x
  3. Step 3: Cross multiply
    105,144.60x = 145,102.95 × 59,821.46
  4. Step 4: Simplify right side
    105,144.60x = 8,680,269,593.79
  5. Step 5: Solve for x
    x = 8,680,269,593.79/105,144.60
  6. Step 6: Final answer
    x = 82,555.54

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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.