Home / 136,985.50-189,098.18-83,287.66

Finding the Fourth Proportional to 136,985.50, 189,098.18 and 83,287.66

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Solution

The fourth proportional to 136,985.50, 189,098.18 and 83,287.66 is: 114,972.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,985.50 : 189,098.18 = 83,287.66 : x
  2. Step 2: Convert to fraction form
    136,985.50/189,098.18 = 83,287.66/x
  3. Step 3: Cross multiply
    136,985.50x = 189,098.18 × 83,287.66
  4. Step 4: Simplify right side
    136,985.50x = 15,749,543,560.53
  5. Step 5: Solve for x
    x = 15,749,543,560.53/136,985.50
  6. Step 6: Final answer
    x = 114,972.34

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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.