Home / 118,098,281.40-177,336,378.90-79,929,007.80

Finding the Fourth Proportional to 118,098,281.40, 177,336,378.90 and 79,929,007.80

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Solution

The fourth proportional to 118,098,281.40, 177,336,378.90 and 79,929,007.80 is: 120,021,397.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,098,281.40 : 177,336,378.90 = 79,929,007.80 : x
  2. Step 2: Convert to fraction form
    118,098,281.40/177,336,378.90 = 79,929,007.80/x
  3. Step 3: Cross multiply
    118,098,281.40x = 177,336,378.90 × 79,929,007.80
  4. Step 4: Simplify right side
    118,098,281.40x = 14,174,320,812,321,856
  5. Step 5: Solve for x
    x = 14,174,320,812,321,856/118,098,281.40
  6. Step 6: Final answer
    x = 120,021,397.81

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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.