Home / 130,141.13-179,593.74-72,780.54

Finding the Fourth Proportional to 130,141.13, 179,593.74 and 72,780.54

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Solution

The fourth proportional to 130,141.13, 179,593.74 and 72,780.54 is: 100,436.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,141.13 : 179,593.74 = 72,780.54 : x
  2. Step 2: Convert to fraction form
    130,141.13/179,593.74 = 72,780.54/x
  3. Step 3: Cross multiply
    130,141.13x = 179,593.74 × 72,780.54
  4. Step 4: Simplify right side
    130,141.13x = 13,070,929,377.82
  5. Step 5: Solve for x
    x = 13,070,929,377.82/130,141.13
  6. Step 6: Final answer
    x = 100,436.58

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1.5x scale

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.