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Finding the Fourth Proportional to 134,428.57, 201,642.86 and 40,934.32

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Solution

The fourth proportional to 134,428.57, 201,642.86 and 40,934.32 is: 61,401.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,428.57 : 201,642.86 = 40,934.32 : x
  2. Step 2: Convert to fraction form
    134,428.57/201,642.86 = 40,934.32/x
  3. Step 3: Cross multiply
    134,428.57x = 201,642.86 × 40,934.32
  4. Step 4: Simplify right side
    134,428.57x = 8,254,113,356.96
  5. Step 5: Solve for x
    x = 8,254,113,356.96/134,428.57
  6. Step 6: Final answer
    x = 61,401.48

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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.