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Finding the Fourth Proportional to 136,602.65, 188,512.26 and 76,173.11

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Solution

The fourth proportional to 136,602.65, 188,512.26 and 76,173.11 is: 105,119.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,602.65 : 188,512.26 = 76,173.11 : x
  2. Step 2: Convert to fraction form
    136,602.65/188,512.26 = 76,173.11/x
  3. Step 3: Cross multiply
    136,602.65x = 188,512.26 × 76,173.11
  4. Step 4: Simplify right side
    136,602.65x = 14,359,565,024.51
  5. Step 5: Solve for x
    x = 14,359,565,024.51/136,602.65
  6. Step 6: Final answer
    x = 105,119.23

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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.