Home / 130,003.53-179,402.68-72,643.78

Finding the Fourth Proportional to 130,003.53, 179,402.68 and 72,643.78

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Solution

The fourth proportional to 130,003.53, 179,402.68 and 72,643.78 is: 100,247.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,003.53 : 179,402.68 = 72,643.78 : x
  2. Step 2: Convert to fraction form
    130,003.53/179,402.68 = 72,643.78/x
  3. Step 3: Cross multiply
    130,003.53x = 179,402.68 × 72,643.78
  4. Step 4: Simplify right side
    130,003.53x = 13,032,488,817.33
  5. Step 5: Solve for x
    x = 13,032,488,817.33/130,003.53
  6. Step 6: Final answer
    x = 100,247.19

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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.