Home / 116,916.56-161,306.78-71,547.20

Finding the Fourth Proportional to 116,916.56, 161,306.78 and 71,547.20

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Solution

The fourth proportional to 116,916.56, 161,306.78 and 71,547.20 is: 98,711.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,916.56 : 161,306.78 = 71,547.20 : x
  2. Step 2: Convert to fraction form
    116,916.56/161,306.78 = 71,547.20/x
  3. Step 3: Cross multiply
    116,916.56x = 161,306.78 × 71,547.20
  4. Step 4: Simplify right side
    116,916.56x = 11,541,048,450.02
  5. Step 5: Solve for x
    x = 11,541,048,450.02/116,916.56
  6. Step 6: Final answer
    x = 98,711.84

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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.