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Finding the Fourth Proportional to 105,157.44, 145,117.50 and 57,410.80

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Solution

The fourth proportional to 105,157.44, 145,117.50 and 57,410.80 is: 79,227.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,157.44 : 145,117.50 = 57,410.80 : x
  2. Step 2: Convert to fraction form
    105,157.44/145,117.50 = 57,410.80/x
  3. Step 3: Cross multiply
    105,157.44x = 145,117.50 × 57,410.80
  4. Step 4: Simplify right side
    105,157.44x = 8,331,311,769
  5. Step 5: Solve for x
    x = 8,331,311,769/105,157.44
  6. Step 6: Final answer
    x = 79,227.03

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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.