Home / 136,530.40-188,389.11-76,087.84

Finding the Fourth Proportional to 136,530.40, 188,389.11 and 76,087.84

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Solution

The fourth proportional to 136,530.40, 188,389.11 and 76,087.84 is: 104,988.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,530.40 : 188,389.11 = 76,087.84 : x
  2. Step 2: Convert to fraction form
    136,530.40/188,389.11 = 76,087.84/x
  3. Step 3: Cross multiply
    136,530.40x = 188,389.11 × 76,087.84
  4. Step 4: Simplify right side
    136,530.40x = 14,334,120,459.42
  5. Step 5: Solve for x
    x = 14,334,120,459.42/136,530.40
  6. Step 6: Final answer
    x = 104,988.49

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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.