Home / 116,771.18-161,147.57-65,784.47

Finding the Fourth Proportional to 116,771.18, 161,147.57 and 65,784.47

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Solution

The fourth proportional to 116,771.18, 161,147.57 and 65,784.47 is: 90,784.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,771.18 : 161,147.57 = 65,784.47 : x
  2. Step 2: Convert to fraction form
    116,771.18/161,147.57 = 65,784.47/x
  3. Step 3: Cross multiply
    116,771.18x = 161,147.57 × 65,784.47
  4. Step 4: Simplify right side
    116,771.18x = 10,601,006,349.58
  5. Step 5: Solve for x
    x = 10,601,006,349.58/116,771.18
  6. Step 6: Final answer
    x = 90,784.45

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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.