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Finding the Fourth Proportional to 103,401.01, 142,657.05 and 67,611.97

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Solution

The fourth proportional to 103,401.01, 142,657.05 and 67,611.97 is: 93,280.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,401.01 : 142,657.05 = 67,611.97 : x
  2. Step 2: Convert to fraction form
    103,401.01/142,657.05 = 67,611.97/x
  3. Step 3: Cross multiply
    103,401.01x = 142,657.05 × 67,611.97
  4. Step 4: Simplify right side
    103,401.01x = 9,645,323,828.25
  5. Step 5: Solve for x
    x = 9,645,323,828.25/103,401.01
  6. Step 6: Final answer
    x = 93,280.75

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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.