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Finding the Fourth Proportional to 109,300,978.80, 163,951,468.20 and 28,521,946.80

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Solution

The fourth proportional to 109,300,978.80, 163,951,468.20 and 28,521,946.80 is: 42,782,920.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,300,978.80 : 163,951,468.20 = 28,521,946.80 : x
  2. Step 2: Convert to fraction form
    109,300,978.80/163,951,468.20 = 28,521,946.80/x
  3. Step 3: Cross multiply
    109,300,978.80x = 163,951,468.20 × 28,521,946.80
  4. Step 4: Simplify right side
    109,300,978.80x = 4,676,215,053,782,292
  5. Step 5: Solve for x
    x = 4,676,215,053,782,292/109,300,978.80
  6. Step 6: Final answer
    x = 42,782,920.20

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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.