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Finding the Fourth Proportional to 105,157.44, 145,026.72 and 93,687.84

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Solution

The fourth proportional to 105,157.44, 145,026.72 and 93,687.84 is: 129,208.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,157.44 : 145,026.72 = 93,687.84 : x
  2. Step 2: Convert to fraction form
    105,157.44/145,026.72 = 93,687.84/x
  3. Step 3: Cross multiply
    105,157.44x = 145,026.72 × 93,687.84
  4. Step 4: Simplify right side
    105,157.44x = 13,587,240,139.08
  5. Step 5: Solve for x
    x = 13,587,240,139.08/105,157.44
  6. Step 6: Final answer
    x = 129,208.55

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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.