Home / 209,136.17-288,609.50-113,643.38

Finding the Fourth Proportional to 209,136.17, 288,609.50 and 113,643.38

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Solution

The fourth proportional to 209,136.17, 288,609.50 and 113,643.38 is: 156,828.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,136.17 : 288,609.50 = 113,643.38 : x
  2. Step 2: Convert to fraction form
    209,136.17/288,609.50 = 113,643.38/x
  3. Step 3: Cross multiply
    209,136.17x = 288,609.50 × 113,643.38
  4. Step 4: Simplify right side
    209,136.17x = 32,798,559,080.11
  5. Step 5: Solve for x
    x = 32,798,559,080.11/209,136.17
  6. Step 6: Final answer
    x = 156,828.73

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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.