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Finding the Fourth Proportional to 163,710.80, 245,623.80 and 80,549.20

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Solution

The fourth proportional to 163,710.80, 245,623.80 and 80,549.20 is: 120,852.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,710.80 : 245,623.80 = 80,549.20 : x
  2. Step 2: Convert to fraction form
    163,710.80/245,623.80 = 80,549.20/x
  3. Step 3: Cross multiply
    163,710.80x = 245,623.80 × 80,549.20
  4. Step 4: Simplify right side
    163,710.80x = 19,784,800,590.96
  5. Step 5: Solve for x
    x = 19,784,800,590.96/163,710.80
  6. Step 6: Final answer
    x = 120,852.14

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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.