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Finding the Fourth Proportional to 163,291.43, 225,342 and 91,671.59

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Solution

The fourth proportional to 163,291.43, 225,342 and 91,671.59 is: 126,506.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,291.43 : 225,342 = 91,671.59 : x
  2. Step 2: Convert to fraction form
    163,291.43/225,342 = 91,671.59/x
  3. Step 3: Cross multiply
    163,291.43x = 225,342 × 91,671.59
  4. Step 4: Simplify right side
    163,291.43x = 20,657,459,433.78
  5. Step 5: Solve for x
    x = 20,657,459,433.78/163,291.43
  6. Step 6: Final answer
    x = 126,506.70

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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.