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Finding the Fourth Proportional to 164,979.80, 247,032.30 and 129,987.80

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Solution

The fourth proportional to 164,979.80, 247,032.30 and 129,987.80 is: 194,637.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,979.80 : 247,032.30 = 129,987.80 : x
  2. Step 2: Convert to fraction form
    164,979.80/247,032.30 = 129,987.80/x
  3. Step 3: Cross multiply
    164,979.80x = 247,032.30 × 129,987.80
  4. Step 4: Simplify right side
    164,979.80x = 32,111,185,205.94
  5. Step 5: Solve for x
    x = 32,111,185,205.94/164,979.80
  6. Step 6: Final answer
    x = 194,637.07

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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.