Home / 130,892.48-195,928.45-90,128.15

Finding the Fourth Proportional to 130,892.48, 195,928.45 and 90,128.15

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Solution

The fourth proportional to 130,892.48, 195,928.45 and 90,128.15 is: 134,909.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,892.48 : 195,928.45 = 90,128.15 : x
  2. Step 2: Convert to fraction form
    130,892.48/195,928.45 = 90,128.15/x
  3. Step 3: Cross multiply
    130,892.48x = 195,928.45 × 90,128.15
  4. Step 4: Simplify right side
    130,892.48x = 17,658,668,730.87
  5. Step 5: Solve for x
    x = 17,658,668,730.87/130,892.48
  6. Step 6: Final answer
    x = 134,909.73

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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.