Home / 139,130.43-208,712.28-49,154.51

Finding the Fourth Proportional to 139,130.43, 208,712.28 and 49,154.51

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Solution

The fourth proportional to 139,130.43, 208,712.28 and 49,154.51 is: 73,737.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,130.43 : 208,712.28 = 49,154.51 : x
  2. Step 2: Convert to fraction form
    139,130.43/208,712.28 = 49,154.51/x
  3. Step 3: Cross multiply
    139,130.43x = 208,712.28 × 49,154.51
  4. Step 4: Simplify right side
    139,130.43x = 10,259,149,854.38
  5. Step 5: Solve for x
    x = 10,259,149,854.38/139,130.43
  6. Step 6: Final answer
    x = 73,737.64

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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.