Home / 128,062,668.60-191,986,358.76-103,741,281.36

Finding the Fourth Proportional to 128,062,668.60, 191,986,358.76 and 103,741,281.36

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Solution

The fourth proportional to 128,062,668.60, 191,986,358.76 and 103,741,281.36 is: 155,524,721.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,062,668.60 : 191,986,358.76 = 103,741,281.36 : x
  2. Step 2: Convert to fraction form
    128,062,668.60/191,986,358.76 = 103,741,281.36/x
  3. Step 3: Cross multiply
    128,062,668.60x = 191,986,358.76 × 103,741,281.36
  4. Step 4: Simplify right side
    128,062,668.60x = 19,916,910,861,403,060
  5. Step 5: Solve for x
    x = 19,916,910,861,403,060/128,062,668.60
  6. Step 6: Final answer
    x = 155,524,721.44

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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.