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Finding the Fourth Proportional to 163,109.76, 225,089.76 and 99,443.52

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Solution

The fourth proportional to 163,109.76, 225,089.76 and 99,443.52 is: 137,231.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,109.76 : 225,089.76 = 99,443.52 : x
  2. Step 2: Convert to fraction form
    163,109.76/225,089.76 = 99,443.52/x
  3. Step 3: Cross multiply
    163,109.76x = 225,089.76 × 99,443.52
  4. Step 4: Simplify right side
    163,109.76x = 22,383,718,050.36
  5. Step 5: Solve for x
    x = 22,383,718,050.36/163,109.76
  6. Step 6: Final answer
    x = 137,231.02

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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.