Home / 128,884,045.76-177,863,760-70,150,515.04

Finding the Fourth Proportional to 128,884,045.76, 177,863,760 and 70,150,515.04

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Solution

The fourth proportional to 128,884,045.76, 177,863,760 and 70,150,515.04 is: 96,809,766.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,884,045.76 : 177,863,760 = 70,150,515.04 : x
  2. Step 2: Convert to fraction form
    128,884,045.76/177,863,760 = 70,150,515.04/x
  3. Step 3: Cross multiply
    128,884,045.76x = 177,863,760 × 70,150,515.04
  4. Step 4: Simplify right side
    128,884,045.76x = 12,477,234,370,950,952
  5. Step 5: Solve for x
    x = 12,477,234,370,950,952/128,884,045.76
  6. Step 6: Final answer
    x = 96,809,766.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.