Home / 130,109.60-195,085.20-51,129.20

Finding the Fourth Proportional to 130,109.60, 195,085.20 and 51,129.20

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Solution

The fourth proportional to 130,109.60, 195,085.20 and 51,129.20 is: 76,662.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,109.60 : 195,085.20 = 51,129.20 : x
  2. Step 2: Convert to fraction form
    130,109.60/195,085.20 = 51,129.20/x
  3. Step 3: Cross multiply
    130,109.60x = 195,085.20 × 51,129.20
  4. Step 4: Simplify right side
    130,109.60x = 9,974,550,207.84
  5. Step 5: Solve for x
    x = 9,974,550,207.84/130,109.60
  6. Step 6: Final answer
    x = 76,662.68

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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.