Home / 209,128.18-288,598.65-113,634.89

Finding the Fourth Proportional to 209,128.18, 288,598.65 and 113,634.89

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Solution

The fourth proportional to 209,128.18, 288,598.65 and 113,634.89 is: 156,817.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,128.18 : 288,598.65 = 113,634.89 : x
  2. Step 2: Convert to fraction form
    209,128.18/288,598.65 = 113,634.89/x
  3. Step 3: Cross multiply
    209,128.18x = 288,598.65 × 113,634.89
  4. Step 4: Simplify right side
    209,128.18x = 32,794,875,846.90
  5. Step 5: Solve for x
    x = 32,794,875,846.90/209,128.18
  6. Step 6: Final answer
    x = 156,817.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.