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Finding the Fourth Proportional to 215,810.79, 297,740.79 and 125,116.83

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Solution

The fourth proportional to 215,810.79, 297,740.79 and 125,116.83 is: 172,615.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,810.79 : 297,740.79 = 125,116.83 : x
  2. Step 2: Convert to fraction form
    215,810.79/297,740.79 = 125,116.83/x
  3. Step 3: Cross multiply
    215,810.79x = 297,740.79 × 125,116.83
  4. Step 4: Simplify right side
    215,810.79x = 37,252,383,806.50
  5. Step 5: Solve for x
    x = 37,252,383,806.50/215,810.79
  6. Step 6: Final answer
    x = 172,615.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.