Home / 134,830.64-202,420.92-103,687.76

Finding the Fourth Proportional to 134,830.64, 202,420.92 and 103,687.76

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Solution

The fourth proportional to 134,830.64, 202,420.92 and 103,687.76 is: 155,666.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,830.64 : 202,420.92 = 103,687.76 : x
  2. Step 2: Convert to fraction form
    134,830.64/202,420.92 = 103,687.76/x
  3. Step 3: Cross multiply
    134,830.64x = 202,420.92 × 103,687.76
  4. Step 4: Simplify right side
    134,830.64x = 20,988,571,771.94
  5. Step 5: Solve for x
    x = 20,988,571,771.94/134,830.64
  6. Step 6: Final answer
    x = 155,666.19

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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.