Home / 128,158,833.51-176,860,039.41-69,421,498.63

Finding the Fourth Proportional to 128,158,833.51, 176,860,039.41 and 69,421,498.63

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Solution

The fourth proportional to 128,158,833.51, 176,860,039.41 and 69,421,498.63 is: 95,802,128.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,158,833.51 : 176,860,039.41 = 69,421,498.63 : x
  2. Step 2: Convert to fraction form
    128,158,833.51/176,860,039.41 = 69,421,498.63/x
  3. Step 3: Cross multiply
    128,158,833.51x = 176,860,039.41 × 69,421,498.63
  4. Step 4: Simplify right side
    128,158,833.51x = 12,277,888,983,160,910
  5. Step 5: Solve for x
    x = 12,277,888,983,160,910/128,158,833.51
  6. Step 6: Final answer
    x = 95,802,128.09

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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.