Home / 90,782,466.30-136,173,699.45-80,011,928.70

Finding the Fourth Proportional to 90,782,466.30, 136,173,699.45 and 80,011,928.70

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Solution

The fourth proportional to 90,782,466.30, 136,173,699.45 and 80,011,928.70 is: 120,017,893.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,782,466.30 : 136,173,699.45 = 80,011,928.70 : x
  2. Step 2: Convert to fraction form
    90,782,466.30/136,173,699.45 = 80,011,928.70/x
  3. Step 3: Cross multiply
    90,782,466.30x = 136,173,699.45 × 80,011,928.70
  4. Step 4: Simplify right side
    90,782,466.30x = 10,895,520,331,208,628
  5. Step 5: Solve for x
    x = 10,895,520,331,208,628/90,782,466.30
  6. Step 6: Final answer
    x = 120,017,893.05

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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.