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Finding the Fourth Proportional to 82,002.90, 122,809.95 and 82,002.90

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Solution

The fourth proportional to 82,002.90, 122,809.95 and 82,002.90 is: 122,809.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,002.90 : 122,809.95 = 82,002.90 : x
  2. Step 2: Convert to fraction form
    82,002.90/122,809.95 = 82,002.90/x
  3. Step 3: Cross multiply
    82,002.90x = 122,809.95 × 82,002.90
  4. Step 4: Simplify right side
    82,002.90x = 10,070,772,048.86
  5. Step 5: Solve for x
    x = 10,070,772,048.86/82,002.90
  6. Step 6: Final answer
    x = 122,809.95

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1.5x scale

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.