Home / 130,808,401.20-196,212,601.80-128,121,015.60

Finding the Fourth Proportional to 130,808,401.20, 196,212,601.80 and 128,121,015.60

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Solution

The fourth proportional to 130,808,401.20, 196,212,601.80 and 128,121,015.60 is: 192,181,523.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,808,401.20 : 196,212,601.80 = 128,121,015.60 : x
  2. Step 2: Convert to fraction form
    130,808,401.20/196,212,601.80 = 128,121,015.60/x
  3. Step 3: Cross multiply
    130,808,401.20x = 196,212,601.80 × 128,121,015.60
  4. Step 4: Simplify right side
    130,808,401.20x = 25,138,957,816,134,388
  5. Step 5: Solve for x
    x = 25,138,957,816,134,388/130,808,401.20
  6. Step 6: Final answer
    x = 192,181,523.40

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1.5x scale

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.