Home / 113,885.28-170,730.72-80,500.32

Finding the Fourth Proportional to 113,885.28, 170,730.72 and 80,500.32

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Solution

The fourth proportional to 113,885.28, 170,730.72 and 80,500.32 is: 120,681.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,885.28 : 170,730.72 = 80,500.32 : x
  2. Step 2: Convert to fraction form
    113,885.28/170,730.72 = 80,500.32/x
  3. Step 3: Cross multiply
    113,885.28x = 170,730.72 × 80,500.32
  4. Step 4: Simplify right side
    113,885.28x = 13,743,877,593.83
  5. Step 5: Solve for x
    x = 13,743,877,593.83/113,885.28
  6. Step 6: Final answer
    x = 120,681.77

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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.