Home / 136,985.63-189,026.91-85,982.04

Finding the Fourth Proportional to 136,985.63, 189,026.91 and 85,982.04

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Solution

The fourth proportional to 136,985.63, 189,026.91 and 85,982.04 is: 118,646.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,985.63 : 189,026.91 = 85,982.04 : x
  2. Step 2: Convert to fraction form
    136,985.63/189,026.91 = 85,982.04/x
  3. Step 3: Cross multiply
    136,985.63x = 189,026.91 × 85,982.04
  4. Step 4: Simplify right side
    136,985.63x = 16,252,919,336.70
  5. Step 5: Solve for x
    x = 16,252,919,336.70/136,985.63
  6. Step 6: Final answer
    x = 118,646.90

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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.