Home / 185,357.07-278,082.32-85,587.21

Finding the Fourth Proportional to 185,357.07, 278,082.32 and 85,587.21

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Solution

The fourth proportional to 185,357.07, 278,082.32 and 85,587.21 is: 128,402.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,357.07 : 278,082.32 = 85,587.21 : x
  2. Step 2: Convert to fraction form
    185,357.07/278,082.32 = 85,587.21/x
  3. Step 3: Cross multiply
    185,357.07x = 278,082.32 × 85,587.21
  4. Step 4: Simplify right side
    185,357.07x = 23,800,289,491.19
  5. Step 5: Solve for x
    x = 23,800,289,491.19/185,357.07
  6. Step 6: Final answer
    x = 128,402.38

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1.5x scale

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.