Home / 136,885.02-188,881.11-80,314.62

Finding the Fourth Proportional to 136,885.02, 188,881.11 and 80,314.62

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Solution

The fourth proportional to 136,885.02, 188,881.11 and 80,314.62 is: 110,822.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,885.02 : 188,881.11 = 80,314.62 : x
  2. Step 2: Convert to fraction form
    136,885.02/188,881.11 = 80,314.62/x
  3. Step 3: Cross multiply
    136,885.02x = 188,881.11 × 80,314.62
  4. Step 4: Simplify right side
    136,885.02x = 15,169,914,574.83
  5. Step 5: Solve for x
    x = 15,169,914,574.83/136,885.02
  6. Step 6: Final answer
    x = 110,822.31

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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.