Home / 136,989.28-205,387.33-52,678.61

Finding the Fourth Proportional to 136,989.28, 205,387.33 and 52,678.61

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Solution

The fourth proportional to 136,989.28, 205,387.33 and 52,678.61 is: 78,980.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,989.28 : 205,387.33 = 52,678.61 : x
  2. Step 2: Convert to fraction form
    136,989.28/205,387.33 = 52,678.61/x
  3. Step 3: Cross multiply
    136,989.28x = 205,387.33 × 52,678.61
  4. Step 4: Simplify right side
    136,989.28x = 10,819,519,056.01
  5. Step 5: Solve for x
    x = 10,819,519,056.01/136,989.28
  6. Step 6: Final answer
    x = 78,980.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.