Home / 136,528.40-188,415.66-76,099.47

Finding the Fourth Proportional to 136,528.40, 188,415.66 and 76,099.47

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Solution

The fourth proportional to 136,528.40, 188,415.66 and 76,099.47 is: 105,020.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,528.40 : 188,415.66 = 76,099.47 : x
  2. Step 2: Convert to fraction form
    136,528.40/188,415.66 = 76,099.47/x
  3. Step 3: Cross multiply
    136,528.40x = 188,415.66 × 76,099.47
  4. Step 4: Simplify right side
    136,528.40x = 14,338,331,865.70
  5. Step 5: Solve for x
    x = 14,338,331,865.70/136,528.40
  6. Step 6: Final answer
    x = 105,020.87

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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.