Home / 130,431.96-179,932.02-85,089

Finding the Fourth Proportional to 130,431.96, 179,932.02 and 85,089

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Solution

The fourth proportional to 130,431.96, 179,932.02 and 85,089 is: 117,381.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,431.96 : 179,932.02 = 85,089 : x
  2. Step 2: Convert to fraction form
    130,431.96/179,932.02 = 85,089/x
  3. Step 3: Cross multiply
    130,431.96x = 179,932.02 × 85,089
  4. Step 4: Simplify right side
    130,431.96x = 15,310,235,649.78
  5. Step 5: Solve for x
    x = 15,310,235,649.78/130,431.96
  6. Step 6: Final answer
    x = 117,381.01

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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.