Home / 133,130.21-183,743.42-78,680.16

Finding the Fourth Proportional to 133,130.21, 183,743.42 and 78,680.16

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Solution

The fourth proportional to 133,130.21, 183,743.42 and 78,680.16 is: 108,592.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,130.21 : 183,743.42 = 78,680.16 : x
  2. Step 2: Convert to fraction form
    133,130.21/183,743.42 = 78,680.16/x
  3. Step 3: Cross multiply
    133,130.21x = 183,743.42 × 78,680.16
  4. Step 4: Simplify right side
    133,130.21x = 14,456,960,765.83
  5. Step 5: Solve for x
    x = 14,456,960,765.83/133,130.21
  6. Step 6: Final answer
    x = 108,592.64

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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.