Home / 138,606.02-191,275.38-78,177.17

Finding the Fourth Proportional to 138,606.02, 191,275.38 and 78,177.17

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Solution

The fourth proportional to 138,606.02, 191,275.38 and 78,177.17 is: 107,883.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,606.02 : 191,275.38 = 78,177.17 : x
  2. Step 2: Convert to fraction form
    138,606.02/191,275.38 = 78,177.17/x
  3. Step 3: Cross multiply
    138,606.02x = 191,275.38 × 78,177.17
  4. Step 4: Simplify right side
    138,606.02x = 14,953,366,942.70
  5. Step 5: Solve for x
    x = 14,953,366,942.70/138,606.02
  6. Step 6: Final answer
    x = 107,883.96

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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.