Home / 120,844.30-180,908.05-89,817.10

Finding the Fourth Proportional to 120,844.30, 180,908.05 and 89,817.10

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Solution

The fourth proportional to 120,844.30, 180,908.05 and 89,817.10 is: 134,459.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,844.30 : 180,908.05 = 89,817.10 : x
  2. Step 2: Convert to fraction form
    120,844.30/180,908.05 = 89,817.10/x
  3. Step 3: Cross multiply
    120,844.30x = 180,908.05 × 89,817.10
  4. Step 4: Simplify right side
    120,844.30x = 16,248,636,417.66
  5. Step 5: Solve for x
    x = 16,248,636,417.66/120,844.30
  6. Step 6: Final answer
    x = 134,459.27

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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.