Home / 154,039.72-212,568.14-86,056.42

Finding the Fourth Proportional to 154,039.72, 212,568.14 and 86,056.42

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Solution

The fourth proportional to 154,039.72, 212,568.14 and 86,056.42 is: 118,754.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,039.72 : 212,568.14 = 86,056.42 : x
  2. Step 2: Convert to fraction form
    154,039.72/212,568.14 = 86,056.42/x
  3. Step 3: Cross multiply
    154,039.72x = 212,568.14 × 86,056.42
  4. Step 4: Simplify right side
    154,039.72x = 18,292,853,134.46
  5. Step 5: Solve for x
    x = 18,292,853,134.46/154,039.72
  6. Step 6: Final answer
    x = 118,754.13

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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.