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Finding the Fourth Proportional to 135,994, 187,683.24 and 76,389.52

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Solution

The fourth proportional to 135,994, 187,683.24 and 76,389.52 is: 105,424.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,994 : 187,683.24 = 76,389.52 : x
  2. Step 2: Convert to fraction form
    135,994/187,683.24 = 76,389.52/x
  3. Step 3: Cross multiply
    135,994x = 187,683.24 × 76,389.52
  4. Step 4: Simplify right side
    135,994x = 14,337,032,615.64
  5. Step 5: Solve for x
    x = 14,337,032,615.64/135,994
  6. Step 6: Final answer
    x = 105,424.01

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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.