Home / 136,553.74-188,444.96-76,128.19

Finding the Fourth Proportional to 136,553.74, 188,444.96 and 76,128.19

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Solution

The fourth proportional to 136,553.74, 188,444.96 and 76,128.19 is: 105,057.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,553.74 : 188,444.96 = 76,128.19 : x
  2. Step 2: Convert to fraction form
    136,553.74/188,444.96 = 76,128.19/x
  3. Step 3: Cross multiply
    136,553.74x = 188,444.96 × 76,128.19
  4. Step 4: Simplify right side
    136,553.74x = 14,345,973,719.42
  5. Step 5: Solve for x
    x = 14,345,973,719.42/136,553.74
  6. Step 6: Final answer
    x = 105,057.35

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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.