Home / 109,156,000.20-163,734,000.30-78,385,566.30

Finding the Fourth Proportional to 109,156,000.20, 163,734,000.30 and 78,385,566.30

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Solution

The fourth proportional to 109,156,000.20, 163,734,000.30 and 78,385,566.30 is: 117,578,349.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,156,000.20 : 163,734,000.30 = 78,385,566.30 : x
  2. Step 2: Convert to fraction form
    109,156,000.20/163,734,000.30 = 78,385,566.30/x
  3. Step 3: Cross multiply
    109,156,000.20x = 163,734,000.30 × 78,385,566.30
  4. Step 4: Simplify right side
    109,156,000.20x = 12,834,382,336,079,870
  5. Step 5: Solve for x
    x = 12,834,382,336,079,870/109,156,000.20
  6. Step 6: Final answer
    x = 117,578,349.45

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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.