Home / 133,130.09-183,743.27-78,680.03

Finding the Fourth Proportional to 133,130.09, 183,743.27 and 78,680.03

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Solution

The fourth proportional to 133,130.09, 183,743.27 and 78,680.03 is: 108,592.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,130.09 : 183,743.27 = 78,680.03 : x
  2. Step 2: Convert to fraction form
    133,130.09/183,743.27 = 78,680.03/x
  3. Step 3: Cross multiply
    133,130.09x = 183,743.27 × 78,680.03
  4. Step 4: Simplify right side
    133,130.09x = 14,456,924,683.78
  5. Step 5: Solve for x
    x = 14,456,924,683.78/133,130.09
  6. Step 6: Final answer
    x = 108,592.47

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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.