Home / 109,043,002.20-163,564,503.30-78,432,000.60

Finding the Fourth Proportional to 109,043,002.20, 163,564,503.30 and 78,432,000.60

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Solution

The fourth proportional to 109,043,002.20, 163,564,503.30 and 78,432,000.60 is: 117,648,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,043,002.20 : 163,564,503.30 = 78,432,000.60 : x
  2. Step 2: Convert to fraction form
    109,043,002.20/163,564,503.30 = 78,432,000.60/x
  3. Step 3: Cross multiply
    109,043,002.20x = 163,564,503.30 × 78,432,000.60
  4. Step 4: Simplify right side
    109,043,002.20x = 12,828,691,220,964,302
  5. Step 5: Solve for x
    x = 12,828,691,220,964,302/109,043,002.20
  6. Step 6: Final answer
    x = 117,648,000.90

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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.