Home / 130,484.89-195,587.40-85,489.24

Finding the Fourth Proportional to 130,484.89, 195,587.40 and 85,489.24

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Solution

The fourth proportional to 130,484.89, 195,587.40 and 85,489.24 is: 128,142.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,484.89 : 195,587.40 = 85,489.24 : x
  2. Step 2: Convert to fraction form
    130,484.89/195,587.40 = 85,489.24/x
  3. Step 3: Cross multiply
    130,484.89x = 195,587.40 × 85,489.24
  4. Step 4: Simplify right side
    130,484.89x = 16,720,618,189.39
  5. Step 5: Solve for x
    x = 16,720,618,189.39/130,484.89
  6. Step 6: Final answer
    x = 128,142.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.