Home / 137,573.57-189,771.10-86,505.45

Finding the Fourth Proportional to 137,573.57, 189,771.10 and 86,505.45

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Solution

The fourth proportional to 137,573.57, 189,771.10 and 86,505.45 is: 119,326.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,573.57 : 189,771.10 = 86,505.45 : x
  2. Step 2: Convert to fraction form
    137,573.57/189,771.10 = 86,505.45/x
  3. Step 3: Cross multiply
    137,573.57x = 189,771.10 × 86,505.45
  4. Step 4: Simplify right side
    137,573.57x = 16,416,234,186.23
  5. Step 5: Solve for x
    x = 16,416,234,186.23/137,573.57
  6. Step 6: Final answer
    x = 119,326.95

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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.