Home / 156,134,783.49-215,467,284.92-86,521,326.90

Finding the Fourth Proportional to 156,134,783.49, 215,467,284.92 and 86,521,326.90

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Solution

The fourth proportional to 156,134,783.49, 215,467,284.92 and 86,521,326.90 is: 119,400,142.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,134,783.49 : 215,467,284.92 = 86,521,326.90 : x
  2. Step 2: Convert to fraction form
    156,134,783.49/215,467,284.92 = 86,521,326.90/x
  3. Step 3: Cross multiply
    156,134,783.49x = 215,467,284.92 × 86,521,326.90
  4. Step 4: Simplify right side
    156,134,783.49x = 18,642,515,394,386,156
  5. Step 5: Solve for x
    x = 18,642,515,394,386,156/156,134,783.49
  6. Step 6: Final answer
    x = 119,400,142.48

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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.