Home / 130,669.68-180,302.30-76,965.39

Finding the Fourth Proportional to 130,669.68, 180,302.30 and 76,965.39

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Solution

The fourth proportional to 130,669.68, 180,302.30 and 76,965.39 is: 106,199.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,669.68 : 180,302.30 = 76,965.39 : x
  2. Step 2: Convert to fraction form
    130,669.68/180,302.30 = 76,965.39/x
  3. Step 3: Cross multiply
    130,669.68x = 180,302.30 × 76,965.39
  4. Step 4: Simplify right side
    130,669.68x = 13,877,036,837.40
  5. Step 5: Solve for x
    x = 13,877,036,837.40/130,669.68
  6. Step 6: Final answer
    x = 106,199.36

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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.