Home / 128,295,345.44-177,051,310.82-72,539,568.15

Finding the Fourth Proportional to 128,295,345.44, 177,051,310.82 and 72,539,568.15

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Solution

The fourth proportional to 128,295,345.44, 177,051,310.82 and 72,539,568.15 is: 100,106,715.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,295,345.44 : 177,051,310.82 = 72,539,568.15 : x
  2. Step 2: Convert to fraction form
    128,295,345.44/177,051,310.82 = 72,539,568.15/x
  3. Step 3: Cross multiply
    128,295,345.44x = 177,051,310.82 × 72,539,568.15
  4. Step 4: Simplify right side
    128,295,345.44x = 12,843,225,627,274,222
  5. Step 5: Solve for x
    x = 12,843,225,627,274,222/128,295,345.44
  6. Step 6: Final answer
    x = 100,106,715.35

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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.