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Finding the Fourth Proportional to 110,643.10, 152,561.10 and 90,940.96

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Solution

The fourth proportional to 110,643.10, 152,561.10 and 90,940.96 is: 125,394.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,643.10 : 152,561.10 = 90,940.96 : x
  2. Step 2: Convert to fraction form
    110,643.10/152,561.10 = 90,940.96/x
  3. Step 3: Cross multiply
    110,643.10x = 152,561.10 × 90,940.96
  4. Step 4: Simplify right side
    110,643.10x = 13,874,053,424.39
  5. Step 5: Solve for x
    x = 13,874,053,424.39/110,643.10
  6. Step 6: Final answer
    x = 125,394.66

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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.