Home / 109,431.40-164,276.70-108,653.80

Finding the Fourth Proportional to 109,431.40, 164,276.70 and 108,653.80

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Solution

The fourth proportional to 109,431.40, 164,276.70 and 108,653.80 is: 163,109.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,431.40 : 164,276.70 = 108,653.80 : x
  2. Step 2: Convert to fraction form
    109,431.40/164,276.70 = 108,653.80/x
  3. Step 3: Cross multiply
    109,431.40x = 164,276.70 × 108,653.80
  4. Step 4: Simplify right side
    109,431.40x = 17,849,287,706.46
  5. Step 5: Solve for x
    x = 17,849,287,706.46/109,431.40
  6. Step 6: Final answer
    x = 163,109.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.