Home / 136,306.08-188,089.20-100,515.36

Finding the Fourth Proportional to 136,306.08, 188,089.20 and 100,515.36

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Solution

The fourth proportional to 136,306.08, 188,089.20 and 100,515.36 is: 138,701.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,306.08 : 188,089.20 = 100,515.36 : x
  2. Step 2: Convert to fraction form
    136,306.08/188,089.20 = 100,515.36/x
  3. Step 3: Cross multiply
    136,306.08x = 188,089.20 × 100,515.36
  4. Step 4: Simplify right side
    136,306.08x = 18,905,853,650.11
  5. Step 5: Solve for x
    x = 18,905,853,650.11/136,306.08
  6. Step 6: Final answer
    x = 138,701.47

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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.