Home / 138,582.06-191,248.83-77,333.61

Finding the Fourth Proportional to 138,582.06, 191,248.83 and 77,333.61

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Solution

The fourth proportional to 138,582.06, 191,248.83 and 77,333.61 is: 106,723.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,582.06 : 191,248.83 = 77,333.61 : x
  2. Step 2: Convert to fraction form
    138,582.06/191,248.83 = 77,333.61/x
  3. Step 3: Cross multiply
    138,582.06x = 191,248.83 × 77,333.61
  4. Step 4: Simplify right side
    138,582.06x = 14,789,962,432.18
  5. Step 5: Solve for x
    x = 14,789,962,432.18/138,582.06
  6. Step 6: Final answer
    x = 106,723.50

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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.