Home / 185,622.60-278,433.90-129,635.40

Finding the Fourth Proportional to 185,622.60, 278,433.90 and 129,635.40

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Solution

The fourth proportional to 185,622.60, 278,433.90 and 129,635.40 is: 194,453.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,622.60 : 278,433.90 = 129,635.40 : x
  2. Step 2: Convert to fraction form
    185,622.60/278,433.90 = 129,635.40/x
  3. Step 3: Cross multiply
    185,622.60x = 278,433.90 × 129,635.40
  4. Step 4: Simplify right side
    185,622.60x = 36,094,890,000.06
  5. Step 5: Solve for x
    x = 36,094,890,000.06/185,622.60
  6. Step 6: Final answer
    x = 194,453.10

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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.