Home / 153,845.56-212,306.76-86,777.56

Finding the Fourth Proportional to 153,845.56, 212,306.76 and 86,777.56

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Solution

The fourth proportional to 153,845.56, 212,306.76 and 86,777.56 is: 119,752.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,845.56 : 212,306.76 = 86,777.56 : x
  2. Step 2: Convert to fraction form
    153,845.56/212,306.76 = 86,777.56/x
  3. Step 3: Cross multiply
    153,845.56x = 212,306.76 × 86,777.56
  4. Step 4: Simplify right side
    153,845.56x = 18,423,462,604.31
  5. Step 5: Solve for x
    x = 18,423,462,604.31/153,845.56
  6. Step 6: Final answer
    x = 119,752.97

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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.