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Finding the Fourth Proportional to 80,746,692.40, 121,120,038.60 and 80,746,692.40

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Solution

The fourth proportional to 80,746,692.40, 121,120,038.60 and 80,746,692.40 is: 121,120,038.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,746,692.40 : 121,120,038.60 = 80,746,692.40 : x
  2. Step 2: Convert to fraction form
    80,746,692.40/121,120,038.60 = 80,746,692.40/x
  3. Step 3: Cross multiply
    80,746,692.40x = 121,120,038.60 × 80,746,692.40
  4. Step 4: Simplify right side
    80,746,692.40x = 9,780,042,500,310,326
  5. Step 5: Solve for x
    x = 9,780,042,500,310,326/80,746,692.40
  6. Step 6: Final answer
    x = 121,120,038.60

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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.