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Finding the Fourth Proportional to 163,726.80, 245,359.80 and 121,275.60

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Solution

The fourth proportional to 163,726.80, 245,359.80 and 121,275.60 is: 181,742.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,726.80 : 245,359.80 = 121,275.60 : x
  2. Step 2: Convert to fraction form
    163,726.80/245,359.80 = 121,275.60/x
  3. Step 3: Cross multiply
    163,726.80x = 245,359.80 × 121,275.60
  4. Step 4: Simplify right side
    163,726.80x = 29,756,156,960.88
  5. Step 5: Solve for x
    x = 29,756,156,960.88/163,726.80
  6. Step 6: Final answer
    x = 181,742.74

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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.