Home / 100,152,289.11-138,210,970.70-55,499,007.22

Finding the Fourth Proportional to 100,152,289.11, 138,210,970.70 and 55,499,007.22

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Solution

The fourth proportional to 100,152,289.11, 138,210,970.70 and 55,499,007.22 is: 76,589,079.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,152,289.11 : 138,210,970.70 = 55,499,007.22 : x
  2. Step 2: Convert to fraction form
    100,152,289.11/138,210,970.70 = 55,499,007.22/x
  3. Step 3: Cross multiply
    100,152,289.11x = 138,210,970.70 × 55,499,007.22
  4. Step 4: Simplify right side
    100,152,289.11x = 7,670,571,660,762,508
  5. Step 5: Solve for x
    x = 7,670,571,660,762,508/100,152,289.11
  6. Step 6: Final answer
    x = 76,589,079.78

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1.5x scale

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.