Home / 134,390.34-185,447.88-77,805.36

Finding the Fourth Proportional to 134,390.34, 185,447.88 and 77,805.36

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Solution

The fourth proportional to 134,390.34, 185,447.88 and 77,805.36 is: 107,365.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,390.34 : 185,447.88 = 77,805.36 : x
  2. Step 2: Convert to fraction form
    134,390.34/185,447.88 = 77,805.36/x
  3. Step 3: Cross multiply
    134,390.34x = 185,447.88 × 77,805.36
  4. Step 4: Simplify right side
    134,390.34x = 14,428,839,064.64
  5. Step 5: Solve for x
    x = 14,428,839,064.64/134,390.34
  6. Step 6: Final answer
    x = 107,365.15

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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.