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Finding the Fourth Proportional to 163,118.40, 225,102 and 91,496.88

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Solution

The fourth proportional to 163,118.40, 225,102 and 91,496.88 is: 126,264.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,118.40 : 225,102 = 91,496.88 : x
  2. Step 2: Convert to fraction form
    163,118.40/225,102 = 91,496.88/x
  3. Step 3: Cross multiply
    163,118.40x = 225,102 × 91,496.88
  4. Step 4: Simplify right side
    163,118.40x = 20,596,130,681.76
  5. Step 5: Solve for x
    x = 20,596,130,681.76/163,118.40
  6. Step 6: Final answer
    x = 126,264.91

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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.