Home / 130,837.49-180,579.30-77,119.37

Finding the Fourth Proportional to 130,837.49, 180,579.30 and 77,119.37

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Solution

The fourth proportional to 130,837.49, 180,579.30 and 77,119.37 is: 106,438.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,837.49 : 180,579.30 = 77,119.37 : x
  2. Step 2: Convert to fraction form
    130,837.49/180,579.30 = 77,119.37/x
  3. Step 3: Cross multiply
    130,837.49x = 180,579.30 × 77,119.37
  4. Step 4: Simplify right side
    130,837.49x = 13,926,161,851.04
  5. Step 5: Solve for x
    x = 13,926,161,851.04/130,837.49
  6. Step 6: Final answer
    x = 106,438.62

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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.