Home / 130,882.42-180,612.82-79,980.27

Finding the Fourth Proportional to 130,882.42, 180,612.82 and 79,980.27

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Solution

The fourth proportional to 130,882.42, 180,612.82 and 79,980.27 is: 110,369.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,882.42 : 180,612.82 = 79,980.27 : x
  2. Step 2: Convert to fraction form
    130,882.42/180,612.82 = 79,980.27/x
  3. Step 3: Cross multiply
    130,882.42x = 180,612.82 × 79,980.27
  4. Step 4: Simplify right side
    130,882.42x = 14,445,462,109.06
  5. Step 5: Solve for x
    x = 14,445,462,109.06/130,882.42
  6. Step 6: Final answer
    x = 110,369.77

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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.