Home / 129,989.09-179,283.02-84,681.33

Finding the Fourth Proportional to 129,989.09, 179,283.02 and 84,681.33

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Solution

The fourth proportional to 129,989.09, 179,283.02 and 84,681.33 is: 116,793.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,989.09 : 179,283.02 = 84,681.33 : x
  2. Step 2: Convert to fraction form
    129,989.09/179,283.02 = 84,681.33/x
  3. Step 3: Cross multiply
    129,989.09x = 179,283.02 × 84,681.33
  4. Step 4: Simplify right side
    129,989.09x = 15,181,924,156.61
  5. Step 5: Solve for x
    x = 15,181,924,156.61/129,989.09
  6. Step 6: Final answer
    x = 116,793.84

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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.