Home / 130,061.28-179,503.62-76,375.68

Finding the Fourth Proportional to 130,061.28, 179,503.62 and 76,375.68

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Solution

The fourth proportional to 130,061.28, 179,503.62 and 76,375.68 is: 105,409.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,061.28 : 179,503.62 = 76,375.68 : x
  2. Step 2: Convert to fraction form
    130,061.28/179,503.62 = 76,375.68/x
  3. Step 3: Cross multiply
    130,061.28x = 179,503.62 × 76,375.68
  4. Step 4: Simplify right side
    130,061.28x = 13,709,711,039.96
  5. Step 5: Solve for x
    x = 13,709,711,039.96/130,061.28
  6. Step 6: Final answer
    x = 105,409.63

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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.