Home / 133,143.28-183,733.07-79,400.49

Finding the Fourth Proportional to 133,143.28, 183,733.07 and 79,400.49

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Solution

The fourth proportional to 133,143.28, 183,733.07 and 79,400.49 is: 109,569.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,143.28 : 183,733.07 = 79,400.49 : x
  2. Step 2: Convert to fraction form
    133,143.28/183,733.07 = 79,400.49/x
  3. Step 3: Cross multiply
    133,143.28x = 183,733.07 × 79,400.49
  4. Step 4: Simplify right side
    133,143.28x = 14,588,495,787.20
  5. Step 5: Solve for x
    x = 14,588,495,787.20/133,143.28
  6. Step 6: Final answer
    x = 109,569.90

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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.