Home / 130,433.96-179,934.78-85,091

Finding the Fourth Proportional to 130,433.96, 179,934.78 and 85,091

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Solution

The fourth proportional to 130,433.96, 179,934.78 and 85,091 is: 117,383.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,433.96 : 179,934.78 = 85,091 : x
  2. Step 2: Convert to fraction form
    130,433.96/179,934.78 = 85,091/x
  3. Step 3: Cross multiply
    130,433.96x = 179,934.78 × 85,091
  4. Step 4: Simplify right side
    130,433.96x = 15,310,830,364.98
  5. Step 5: Solve for x
    x = 15,310,830,364.98/130,433.96
  6. Step 6: Final answer
    x = 117,383.77

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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.