Home / 130,145.28-179,601.84-76,430.94

Finding the Fourth Proportional to 130,145.28, 179,601.84 and 76,430.94

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Solution

The fourth proportional to 130,145.28, 179,601.84 and 76,430.94 is: 105,475.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,145.28 : 179,601.84 = 76,430.94 : x
  2. Step 2: Convert to fraction form
    130,145.28/179,601.84 = 76,430.94/x
  3. Step 3: Cross multiply
    130,145.28x = 179,601.84 × 76,430.94
  4. Step 4: Simplify right side
    130,145.28x = 13,727,137,456.93
  5. Step 5: Solve for x
    x = 13,727,137,456.93/130,145.28
  6. Step 6: Final answer
    x = 105,475.49

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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.