Home / 130,401,288.40-195,601,932.60-128,488,100.80

Finding the Fourth Proportional to 130,401,288.40, 195,601,932.60 and 128,488,100.80

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Solution

The fourth proportional to 130,401,288.40, 195,601,932.60 and 128,488,100.80 is: 192,732,151.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,401,288.40 : 195,601,932.60 = 128,488,100.80 : x
  2. Step 2: Convert to fraction form
    130,401,288.40/195,601,932.60 = 128,488,100.80/x
  3. Step 3: Cross multiply
    130,401,288.40x = 195,601,932.60 × 128,488,100.80
  4. Step 4: Simplify right side
    130,401,288.40x = 25,132,520,832,583,604
  5. Step 5: Solve for x
    x = 25,132,520,832,583,604/130,401,288.40
  6. Step 6: Final answer
    x = 192,732,151.20

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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.