Home / 137,428.96-206,167.86-70,851.28

Finding the Fourth Proportional to 137,428.96, 206,167.86 and 70,851.28

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Solution

The fourth proportional to 137,428.96, 206,167.86 and 70,851.28 is: 106,289.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,428.96 : 206,167.86 = 70,851.28 : x
  2. Step 2: Convert to fraction form
    137,428.96/206,167.86 = 70,851.28/x
  3. Step 3: Cross multiply
    137,428.96x = 206,167.86 × 70,851.28
  4. Step 4: Simplify right side
    137,428.96x = 14,607,256,775.86
  5. Step 5: Solve for x
    x = 14,607,256,775.86/137,428.96
  6. Step 6: Final answer
    x = 106,289.51

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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.