Home / 130,687.56-195,774.48-86,178.60

Finding the Fourth Proportional to 130,687.56, 195,774.48 and 86,178.60

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Solution

The fourth proportional to 130,687.56, 195,774.48 and 86,178.60 is: 129,098.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,687.56 : 195,774.48 = 86,178.60 : x
  2. Step 2: Convert to fraction form
    130,687.56/195,774.48 = 86,178.60/x
  3. Step 3: Cross multiply
    130,687.56x = 195,774.48 × 86,178.60
  4. Step 4: Simplify right side
    130,687.56x = 16,871,570,602.13
  5. Step 5: Solve for x
    x = 16,871,570,602.13/130,687.56
  6. Step 6: Final answer
    x = 129,098.52

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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.