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Finding the Fourth Proportional to 138,260.46, 207,501.45 and 63,415.89

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Solution

The fourth proportional to 138,260.46, 207,501.45 and 63,415.89 is: 95,174.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,260.46 : 207,501.45 = 63,415.89 : x
  2. Step 2: Convert to fraction form
    138,260.46/207,501.45 = 63,415.89/x
  3. Step 3: Cross multiply
    138,260.46x = 207,501.45 × 63,415.89
  4. Step 4: Simplify right side
    138,260.46x = 13,158,889,128.04
  5. Step 5: Solve for x
    x = 13,158,889,128.04/138,260.46
  6. Step 6: Final answer
    x = 95,174.64

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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.