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Finding the Fourth Proportional to 172,735.20, 238,368.96 and 105,667.20

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Solution

The fourth proportional to 172,735.20, 238,368.96 and 105,667.20 is: 145,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,735.20 : 238,368.96 = 105,667.20 : x
  2. Step 2: Convert to fraction form
    172,735.20/238,368.96 = 105,667.20/x
  3. Step 3: Cross multiply
    172,735.20x = 238,368.96 × 105,667.20
  4. Step 4: Simplify right side
    172,735.20x = 25,187,780,570.11
  5. Step 5: Solve for x
    x = 25,187,780,570.11/172,735.20
  6. Step 6: Final answer
    x = 145,817.30

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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.