Home / 128,582,087.76-177,443,145.99-69,844,799.52

Finding the Fourth Proportional to 128,582,087.76, 177,443,145.99 and 69,844,799.52

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Solution

The fourth proportional to 128,582,087.76, 177,443,145.99 and 69,844,799.52 is: 96,385,749.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,582,087.76 : 177,443,145.99 = 69,844,799.52 : x
  2. Step 2: Convert to fraction form
    128,582,087.76/177,443,145.99 = 69,844,799.52/x
  3. Step 3: Cross multiply
    128,582,087.76x = 177,443,145.99 × 69,844,799.52
  4. Step 4: Simplify right side
    128,582,087.76x = 12,393,480,957,869,642
  5. Step 5: Solve for x
    x = 12,393,480,957,869,642/128,582,087.76
  6. Step 6: Final answer
    x = 96,385,749.94

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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.