Home / 128,952,007.20-193,428,010.80-112,155,847.20

Finding the Fourth Proportional to 128,952,007.20, 193,428,010.80 and 112,155,847.20

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Solution

The fourth proportional to 128,952,007.20, 193,428,010.80 and 112,155,847.20 is: 168,233,770.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,952,007.20 : 193,428,010.80 = 112,155,847.20 : x
  2. Step 2: Convert to fraction form
    128,952,007.20/193,428,010.80 = 112,155,847.20/x
  3. Step 3: Cross multiply
    128,952,007.20x = 193,428,010.80 × 112,155,847.20
  4. Step 4: Simplify right side
    128,952,007.20x = 21,694,082,423,484,752
  5. Step 5: Solve for x
    x = 21,694,082,423,484,752/128,952,007.20
  6. Step 6: Final answer
    x = 168,233,770.80

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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.