Home / 136,938.16-188,973.38-76,519.22

Finding the Fourth Proportional to 136,938.16, 188,973.38 and 76,519.22

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Solution

The fourth proportional to 136,938.16, 188,973.38 and 76,519.22 is: 105,595.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,938.16 : 188,973.38 = 76,519.22 : x
  2. Step 2: Convert to fraction form
    136,938.16/188,973.38 = 76,519.22/x
  3. Step 3: Cross multiply
    136,938.16x = 188,973.38 × 76,519.22
  4. Step 4: Simplify right side
    136,938.16x = 14,460,095,638.36
  5. Step 5: Solve for x
    x = 14,460,095,638.36/136,938.16
  6. Step 6: Final answer
    x = 105,595.81

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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.