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Finding the Fourth Proportional to 163,611.36, 225,760.32 and 91,988.64

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Solution

The fourth proportional to 163,611.36, 225,760.32 and 91,988.64 is: 126,931.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,611.36 : 225,760.32 = 91,988.64 : x
  2. Step 2: Convert to fraction form
    163,611.36/225,760.32 = 91,988.64/x
  3. Step 3: Cross multiply
    163,611.36x = 225,760.32 × 91,988.64
  4. Step 4: Simplify right side
    163,611.36x = 20,767,384,802.76
  5. Step 5: Solve for x
    x = 20,767,384,802.76/163,611.36
  6. Step 6: Final answer
    x = 126,931.19

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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.