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Finding the Fourth Proportional to 121,681.36, 167,900.70 and 67,963.60

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Solution

The fourth proportional to 121,681.36, 167,900.70 and 67,963.60 is: 93,778.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,681.36 : 167,900.70 = 67,963.60 : x
  2. Step 2: Convert to fraction form
    121,681.36/167,900.70 = 67,963.60/x
  3. Step 3: Cross multiply
    121,681.36x = 167,900.70 × 67,963.60
  4. Step 4: Simplify right side
    121,681.36x = 11,411,136,014.52
  5. Step 5: Solve for x
    x = 11,411,136,014.52/121,681.36
  6. Step 6: Final answer
    x = 93,778.83

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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.