Home / 98,985.20-136,602.79-55,965.96

Finding the Fourth Proportional to 98,985.20, 136,602.79 and 55,965.96

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Solution

The fourth proportional to 98,985.20, 136,602.79 and 55,965.96 is: 77,234.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,985.20 : 136,602.79 = 55,965.96 : x
  2. Step 2: Convert to fraction form
    98,985.20/136,602.79 = 55,965.96/x
  3. Step 3: Cross multiply
    98,985.20x = 136,602.79 × 55,965.96
  4. Step 4: Simplify right side
    98,985.20x = 7,645,106,141.11
  5. Step 5: Solve for x
    x = 7,645,106,141.11/98,985.20
  6. Step 6: Final answer
    x = 77,234.84

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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.