Home / 106,577.12-159,713.30-78,275.12

Finding the Fourth Proportional to 106,577.12, 159,713.30 and 78,275.12

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Solution

The fourth proportional to 106,577.12, 159,713.30 and 78,275.12 is: 117,300.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,577.12 : 159,713.30 = 78,275.12 : x
  2. Step 2: Convert to fraction form
    106,577.12/159,713.30 = 78,275.12/x
  3. Step 3: Cross multiply
    106,577.12x = 159,713.30 × 78,275.12
  4. Step 4: Simplify right side
    106,577.12x = 12,501,577,120.22
  5. Step 5: Solve for x
    x = 12,501,577,120.22/106,577.12
  6. Step 6: Final answer
    x = 117,300.76

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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.