Home / 130,782.24-195,916.05-86,273.01

Finding the Fourth Proportional to 130,782.24, 195,916.05 and 86,273.01

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Solution

The fourth proportional to 130,782.24, 195,916.05 and 86,273.01 is: 129,239.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,782.24 : 195,916.05 = 86,273.01 : x
  2. Step 2: Convert to fraction form
    130,782.24/195,916.05 = 86,273.01/x
  3. Step 3: Cross multiply
    130,782.24x = 195,916.05 × 86,273.01
  4. Step 4: Simplify right side
    130,782.24x = 16,902,267,340.81
  5. Step 5: Solve for x
    x = 16,902,267,340.81/130,782.24
  6. Step 6: Final answer
    x = 129,239.78

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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.