Home / 145,209.60-217,814.40-131,385.60

Finding the Fourth Proportional to 145,209.60, 217,814.40 and 131,385.60

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Solution

The fourth proportional to 145,209.60, 217,814.40 and 131,385.60 is: 197,078.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,209.60 : 217,814.40 = 131,385.60 : x
  2. Step 2: Convert to fraction form
    145,209.60/217,814.40 = 131,385.60/x
  3. Step 3: Cross multiply
    145,209.60x = 217,814.40 × 131,385.60
  4. Step 4: Simplify right side
    145,209.60x = 28,617,675,632.64
  5. Step 5: Solve for x
    x = 28,617,675,632.64/145,209.60
  6. Step 6: Final answer
    x = 197,078.40

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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.