Home / 116,459.07-160,719.29-71,129.71

Finding the Fourth Proportional to 116,459.07, 160,719.29 and 71,129.71

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Solution

The fourth proportional to 116,459.07, 160,719.29 and 71,129.71 is: 98,162.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,459.07 : 160,719.29 = 71,129.71 : x
  2. Step 2: Convert to fraction form
    116,459.07/160,719.29 = 71,129.71/x
  3. Step 3: Cross multiply
    116,459.07x = 160,719.29 × 71,129.71
  4. Step 4: Simplify right side
    116,459.07x = 11,431,916,601.09
  5. Step 5: Solve for x
    x = 11,431,916,601.09/116,459.07
  6. Step 6: Final answer
    x = 98,162.53

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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.