Home / 139,931,568.28-193,081,648.62-81,180,765.73

Finding the Fourth Proportional to 139,931,568.28, 193,081,648.62 and 81,180,765.73

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Solution

The fourth proportional to 139,931,568.28, 193,081,648.62 and 81,180,765.73 is: 112,015,582.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,931,568.28 : 193,081,648.62 = 81,180,765.73 : x
  2. Step 2: Convert to fraction form
    139,931,568.28/193,081,648.62 = 81,180,765.73/x
  3. Step 3: Cross multiply
    139,931,568.28x = 193,081,648.62 × 81,180,765.73
  4. Step 4: Simplify right side
    139,931,568.28x = 15,674,516,083,382,398
  5. Step 5: Solve for x
    x = 15,674,516,083,382,398/139,931,568.28
  6. Step 6: Final answer
    x = 112,015,582.16

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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.