Home / 130,317.76-195,372.28-85,617.28

Finding the Fourth Proportional to 130,317.76, 195,372.28 and 85,617.28

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Solution

The fourth proportional to 130,317.76, 195,372.28 and 85,617.28 is: 128,357.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,317.76 : 195,372.28 = 85,617.28 : x
  2. Step 2: Convert to fraction form
    130,317.76/195,372.28 = 85,617.28/x
  3. Step 3: Cross multiply
    130,317.76x = 195,372.28 × 85,617.28
  4. Step 4: Simplify right side
    130,317.76x = 16,727,243,201.00
  5. Step 5: Solve for x
    x = 16,727,243,201.00/130,317.76
  6. Step 6: Final answer
    x = 128,357.36

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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.