Home / 130,579.76-195,869.71-86,196.14

Finding the Fourth Proportional to 130,579.76, 195,869.71 and 86,196.14

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Solution

The fourth proportional to 130,579.76, 195,869.71 and 86,196.14 is: 129,294.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,579.76 : 195,869.71 = 86,196.14 : x
  2. Step 2: Convert to fraction form
    130,579.76/195,869.71 = 86,196.14/x
  3. Step 3: Cross multiply
    130,579.76x = 195,869.71 × 86,196.14
  4. Step 4: Simplify right side
    130,579.76x = 16,883,213,219.10
  5. Step 5: Solve for x
    x = 16,883,213,219.10/130,579.76
  6. Step 6: Final answer
    x = 129,294.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.