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Finding the Fourth Proportional to 158,628.90, 237,475.86 and 138,945.90

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Solution

The fourth proportional to 158,628.90, 237,475.86 and 138,945.90 is: 208,009.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,628.90 : 237,475.86 = 138,945.90 : x
  2. Step 2: Convert to fraction form
    158,628.90/237,475.86 = 138,945.90/x
  3. Step 3: Cross multiply
    158,628.90x = 237,475.86 × 138,945.90
  4. Step 4: Simplify right side
    158,628.90x = 32,996,297,095.97
  5. Step 5: Solve for x
    x = 32,996,297,095.97/158,628.90
  6. Step 6: Final answer
    x = 208,009.37

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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.