Home / 138,129.48-206,185.79-118,533.96

Finding the Fourth Proportional to 138,129.48, 206,185.79 and 118,533.96

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Solution

The fourth proportional to 138,129.48, 206,185.79 and 118,533.96 is: 176,935.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,129.48 : 206,185.79 = 118,533.96 : x
  2. Step 2: Convert to fraction form
    138,129.48/206,185.79 = 118,533.96/x
  3. Step 3: Cross multiply
    138,129.48x = 206,185.79 × 118,533.96
  4. Step 4: Simplify right side
    138,129.48x = 24,440,018,480.76
  5. Step 5: Solve for x
    x = 24,440,018,480.76/138,129.48
  6. Step 6: Final answer
    x = 176,935.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.