Home / 129,469.02-178,564.95-84,748.38

Finding the Fourth Proportional to 129,469.02, 178,564.95 and 84,748.38

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Solution

The fourth proportional to 129,469.02, 178,564.95 and 84,748.38 is: 116,885.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,469.02 : 178,564.95 = 84,748.38 : x
  2. Step 2: Convert to fraction form
    129,469.02/178,564.95 = 84,748.38/x
  3. Step 3: Cross multiply
    129,469.02x = 178,564.95 × 84,748.38
  4. Step 4: Simplify right side
    129,469.02x = 15,133,090,237.28
  5. Step 5: Solve for x
    x = 15,133,090,237.28/129,469.02
  6. Step 6: Final answer
    x = 116,885.80

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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.