Home / 209,106.78-288,567.73-113,613.58

Finding the Fourth Proportional to 209,106.78, 288,567.73 and 113,613.58

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Solution

The fourth proportional to 209,106.78, 288,567.73 and 113,613.58 is: 156,786.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,106.78 : 288,567.73 = 113,613.58 : x
  2. Step 2: Convert to fraction form
    209,106.78/288,567.73 = 113,613.58/x
  3. Step 3: Cross multiply
    209,106.78x = 288,567.73 × 113,613.58
  4. Step 4: Simplify right side
    209,106.78x = 32,785,212,877.77
  5. Step 5: Solve for x
    x = 32,785,212,877.77/209,106.78
  6. Step 6: Final answer
    x = 156,786.94

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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.