Home / 154,304.55-212,931.70-86,308.38

Finding the Fourth Proportional to 154,304.55, 212,931.70 and 86,308.38

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Solution

The fourth proportional to 154,304.55, 212,931.70 and 86,308.38 is: 119,100.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,304.55 : 212,931.70 = 86,308.38 : x
  2. Step 2: Convert to fraction form
    154,304.55/212,931.70 = 86,308.38/x
  3. Step 3: Cross multiply
    154,304.55x = 212,931.70 × 86,308.38
  4. Step 4: Simplify right side
    154,304.55x = 18,377,789,861.88
  5. Step 5: Solve for x
    x = 18,377,789,861.88/154,304.55
  6. Step 6: Final answer
    x = 119,100.76

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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.