Home / 123,208.20-169,953.93-77,806.08

Finding the Fourth Proportional to 123,208.20, 169,953.93 and 77,806.08

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Solution

The fourth proportional to 123,208.20, 169,953.93 and 77,806.08 is: 107,326.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,208.20 : 169,953.93 = 77,806.08 : x
  2. Step 2: Convert to fraction form
    123,208.20/169,953.93 = 77,806.08/x
  3. Step 3: Cross multiply
    123,208.20x = 169,953.93 × 77,806.08
  4. Step 4: Simplify right side
    123,208.20x = 13,223,449,073.89
  5. Step 5: Solve for x
    x = 13,223,449,073.89/123,208.20
  6. Step 6: Final answer
    x = 107,326.05

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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.