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Finding the Fourth Proportional to 112,998.96, 155,943.45 and 67,684.32

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Solution

The fourth proportional to 112,998.96, 155,943.45 and 67,684.32 is: 93,407.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,998.96 : 155,943.45 = 67,684.32 : x
  2. Step 2: Convert to fraction form
    112,998.96/155,943.45 = 67,684.32/x
  3. Step 3: Cross multiply
    112,998.96x = 155,943.45 × 67,684.32
  4. Step 4: Simplify right side
    112,998.96x = 10,554,926,371.70
  5. Step 5: Solve for x
    x = 10,554,926,371.70/112,998.96
  6. Step 6: Final answer
    x = 93,407.29

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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.