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Finding the Fourth Proportional to 170,817.60, 256,072.80 and 111,681.60

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Solution

The fourth proportional to 170,817.60, 256,072.80 and 111,681.60 is: 167,421.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,817.60 : 256,072.80 = 111,681.60 : x
  2. Step 2: Convert to fraction form
    170,817.60/256,072.80 = 111,681.60/x
  3. Step 3: Cross multiply
    170,817.60x = 256,072.80 × 111,681.60
  4. Step 4: Simplify right side
    170,817.60x = 28,598,620,020.48
  5. Step 5: Solve for x
    x = 28,598,620,020.48/170,817.60
  6. Step 6: Final answer
    x = 167,421.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.