Home / 130,076.65-179,534.70-79,078.57

Finding the Fourth Proportional to 130,076.65, 179,534.70 and 79,078.57

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Solution

The fourth proportional to 130,076.65, 179,534.70 and 79,078.57 is: 109,146.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,076.65 : 179,534.70 = 79,078.57 : x
  2. Step 2: Convert to fraction form
    130,076.65/179,534.70 = 79,078.57/x
  3. Step 3: Cross multiply
    130,076.65x = 179,534.70 × 79,078.57
  4. Step 4: Simplify right side
    130,076.65x = 14,197,347,341.38
  5. Step 5: Solve for x
    x = 14,197,347,341.38/130,076.65
  6. Step 6: Final answer
    x = 109,146.01

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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.