Home / 113,909.40-170,864.10-82,416.60

Finding the Fourth Proportional to 113,909.40, 170,864.10 and 82,416.60

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Solution

The fourth proportional to 113,909.40, 170,864.10 and 82,416.60 is: 123,624.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,909.40 : 170,864.10 = 82,416.60 : x
  2. Step 2: Convert to fraction form
    113,909.40/170,864.10 = 82,416.60/x
  3. Step 3: Cross multiply
    113,909.40x = 170,864.10 × 82,416.60
  4. Step 4: Simplify right side
    113,909.40x = 14,082,038,184.06
  5. Step 5: Solve for x
    x = 14,082,038,184.06/113,909.40
  6. Step 6: Final answer
    x = 123,624.90

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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.