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Finding the Fourth Proportional to 163,909.80, 245,864.70 and 144,664.20

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Solution

The fourth proportional to 163,909.80, 245,864.70 and 144,664.20 is: 216,996.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,909.80 : 245,864.70 = 144,664.20 : x
  2. Step 2: Convert to fraction form
    163,909.80/245,864.70 = 144,664.20/x
  3. Step 3: Cross multiply
    163,909.80x = 245,864.70 × 144,664.20
  4. Step 4: Simplify right side
    163,909.80x = 35,567,820,133.74
  5. Step 5: Solve for x
    x = 35,567,820,133.74/163,909.80
  6. Step 6: Final answer
    x = 216,996.30

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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.