Home / 100,152,282.78-138,210,961.86-55,499,000.76

Finding the Fourth Proportional to 100,152,282.78, 138,210,961.86 and 55,499,000.76

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Solution

The fourth proportional to 100,152,282.78, 138,210,961.86 and 55,499,000.76 is: 76,589,070.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,152,282.78 : 138,210,961.86 = 55,499,000.76 : x
  2. Step 2: Convert to fraction form
    100,152,282.78/138,210,961.86 = 55,499,000.76/x
  3. Step 3: Cross multiply
    100,152,282.78x = 138,210,961.86 × 55,499,000.76
  4. Step 4: Simplify right side
    100,152,282.78x = 7,670,570,277,308,472
  5. Step 5: Solve for x
    x = 7,670,570,277,308,472/100,152,282.78
  6. Step 6: Final answer
    x = 76,589,070.81

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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.