Home / 138,751.05-208,126.31-107,206.95

Finding the Fourth Proportional to 138,751.05, 208,126.31 and 107,206.95

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Solution

The fourth proportional to 138,751.05, 208,126.31 and 107,206.95 is: 160,810.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,751.05 : 208,126.31 = 107,206.95 : x
  2. Step 2: Convert to fraction form
    138,751.05/208,126.31 = 107,206.95/x
  3. Step 3: Cross multiply
    138,751.05x = 208,126.31 × 107,206.95
  4. Step 4: Simplify right side
    138,751.05x = 22,312,586,373.82
  5. Step 5: Solve for x
    x = 22,312,586,373.82/138,751.05
  6. Step 6: Final answer
    x = 160,810.22

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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.