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Finding the Fourth Proportional to 136,058.86, 187,763.48 and 74,807.64

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Solution

The fourth proportional to 136,058.86, 187,763.48 and 74,807.64 is: 103,235.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,058.86 : 187,763.48 = 74,807.64 : x
  2. Step 2: Convert to fraction form
    136,058.86/187,763.48 = 74,807.64/x
  3. Step 3: Cross multiply
    136,058.86x = 187,763.48 × 74,807.64
  4. Step 4: Simplify right side
    136,058.86x = 14,046,143,672.36
  5. Step 5: Solve for x
    x = 14,046,143,672.36/136,058.86
  6. Step 6: Final answer
    x = 103,235.79

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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.