Home / 205,869,881.72-308,814,754.29-67,692,429.65

Finding the Fourth Proportional to 205,869,881.72, 308,814,754.29 and 67,692,429.65

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Solution

The fourth proportional to 205,869,881.72, 308,814,754.29 and 67,692,429.65 is: 101,541,910.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,869,881.72 : 308,814,754.29 = 67,692,429.65 : x
  2. Step 2: Convert to fraction form
    205,869,881.72/308,814,754.29 = 67,692,429.65/x
  3. Step 3: Cross multiply
    205,869,881.72x = 308,814,754.29 × 67,692,429.65
  4. Step 4: Simplify right side
    205,869,881.72x = 20,904,421,029,525,692
  5. Step 5: Solve for x
    x = 20,904,421,029,525,692/205,869,881.72
  6. Step 6: Final answer
    x = 101,541,910.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.