Home / 138,969.45-208,733.10-82,918.93

Finding the Fourth Proportional to 138,969.45, 208,733.10 and 82,918.93

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Solution

The fourth proportional to 138,969.45, 208,733.10 and 82,918.93 is: 124,544.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,969.45 : 208,733.10 = 82,918.93 : x
  2. Step 2: Convert to fraction form
    138,969.45/208,733.10 = 82,918.93/x
  3. Step 3: Cross multiply
    138,969.45x = 208,733.10 × 82,918.93
  4. Step 4: Simplify right side
    138,969.45x = 17,307,925,307.58
  5. Step 5: Solve for x
    x = 17,307,925,307.58/138,969.45
  6. Step 6: Final answer
    x = 124,544.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.