Home / 135,172.84-186,530.98-74,739.86

Finding the Fourth Proportional to 135,172.84, 186,530.98 and 74,739.86

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Solution

The fourth proportional to 135,172.84, 186,530.98 and 74,739.86 is: 103,136.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,172.84 : 186,530.98 = 74,739.86 : x
  2. Step 2: Convert to fraction form
    135,172.84/186,530.98 = 74,739.86/x
  3. Step 3: Cross multiply
    135,172.84x = 186,530.98 × 74,739.86
  4. Step 4: Simplify right side
    135,172.84x = 13,941,299,330.86
  5. Step 5: Solve for x
    x = 13,941,299,330.86/135,172.84
  6. Step 6: Final answer
    x = 103,136.84

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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.