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Finding the Fourth Proportional to 163,293.16, 225,329 and 91,656.76

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Solution

The fourth proportional to 163,293.16, 225,329 and 91,656.76 is: 126,477.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,293.16 : 225,329 = 91,656.76 : x
  2. Step 2: Convert to fraction form
    163,293.16/225,329 = 91,656.76/x
  3. Step 3: Cross multiply
    163,293.16x = 225,329 × 91,656.76
  4. Step 4: Simplify right side
    163,293.16x = 20,652,926,074.04
  5. Step 5: Solve for x
    x = 20,652,926,074.04/163,293.16
  6. Step 6: Final answer
    x = 126,477.59

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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.