Home / 136,531.40-188,419.79-76,102.47

Finding the Fourth Proportional to 136,531.40, 188,419.79 and 76,102.47

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Solution

The fourth proportional to 136,531.40, 188,419.79 and 76,102.47 is: 105,025.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,531.40 : 188,419.79 = 76,102.47 : x
  2. Step 2: Convert to fraction form
    136,531.40/188,419.79 = 76,102.47/x
  3. Step 3: Cross multiply
    136,531.40x = 188,419.79 × 76,102.47
  4. Step 4: Simplify right side
    136,531.40x = 14,339,211,606.14
  5. Step 5: Solve for x
    x = 14,339,211,606.14/136,531.40
  6. Step 6: Final answer
    x = 105,025.01

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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.