Home / 136,988.70-189,042.93-75,734.63

Finding the Fourth Proportional to 136,988.70, 189,042.93 and 75,734.63

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Solution

The fourth proportional to 136,988.70, 189,042.93 and 75,734.63 is: 104,512.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,988.70 : 189,042.93 = 75,734.63 : x
  2. Step 2: Convert to fraction form
    136,988.70/189,042.93 = 75,734.63/x
  3. Step 3: Cross multiply
    136,988.70x = 189,042.93 × 75,734.63
  4. Step 4: Simplify right side
    136,988.70x = 14,317,095,412.45
  5. Step 5: Solve for x
    x = 14,317,095,412.45/136,988.70
  6. Step 6: Final answer
    x = 104,512.97

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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.