Home / 130,186.89-179,649.43-72,816.28

Finding the Fourth Proportional to 130,186.89, 179,649.43 and 72,816.28

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Solution

The fourth proportional to 130,186.89, 179,649.43 and 72,816.28 is: 100,481.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,186.89 : 179,649.43 = 72,816.28 : x
  2. Step 2: Convert to fraction form
    130,186.89/179,649.43 = 72,816.28/x
  3. Step 3: Cross multiply
    130,186.89x = 179,649.43 × 72,816.28
  4. Step 4: Simplify right side
    130,186.89x = 13,081,402,565.56
  5. Step 5: Solve for x
    x = 13,081,402,565.56/130,186.89
  6. Step 6: Final answer
    x = 100,481.72

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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.