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Finding the Fourth Proportional to 135,762.98, 187,343.90 and 75,329.79

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Solution

The fourth proportional to 135,762.98, 187,343.90 and 75,329.79 is: 103,950.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,762.98 : 187,343.90 = 75,329.79 : x
  2. Step 2: Convert to fraction form
    135,762.98/187,343.90 = 75,329.79/x
  3. Step 3: Cross multiply
    135,762.98x = 187,343.90 × 75,329.79
  4. Step 4: Simplify right side
    135,762.98x = 14,112,575,708.06
  5. Step 5: Solve for x
    x = 14,112,575,708.06/135,762.98
  6. Step 6: Final answer
    x = 103,950.11

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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.