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Finding the Fourth Proportional to 136,038.63, 187,739.64 and 75,610.26

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Solution

The fourth proportional to 136,038.63, 187,739.64 and 75,610.26 is: 104,345.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,038.63 : 187,739.64 = 75,610.26 : x
  2. Step 2: Convert to fraction form
    136,038.63/187,739.64 = 75,610.26/x
  3. Step 3: Cross multiply
    136,038.63x = 187,739.64 × 75,610.26
  4. Step 4: Simplify right side
    136,038.63x = 14,195,042,992.71
  5. Step 5: Solve for x
    x = 14,195,042,992.71/136,038.63
  6. Step 6: Final answer
    x = 104,345.68

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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.