Home / 133,142.10-183,735.66-79,429.38

Finding the Fourth Proportional to 133,142.10, 183,735.66 and 79,429.38

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Solution

The fourth proportional to 133,142.10, 183,735.66 and 79,429.38 is: 109,612.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,142.10 : 183,735.66 = 79,429.38 : x
  2. Step 2: Convert to fraction form
    133,142.10/183,735.66 = 79,429.38/x
  3. Step 3: Cross multiply
    133,142.10x = 183,735.66 × 79,429.38
  4. Step 4: Simplify right side
    133,142.10x = 14,594,009,557.69
  5. Step 5: Solve for x
    x = 14,594,009,557.69/133,142.10
  6. Step 6: Final answer
    x = 109,612.28

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1.5x scale

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.