Home / 100,037,146.08-138,048,296.58-55,385,108.22

Finding the Fourth Proportional to 100,037,146.08, 138,048,296.58 and 55,385,108.22

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Solution

The fourth proportional to 100,037,146.08, 138,048,296.58 and 55,385,108.22 is: 76,429,807.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,037,146.08 : 138,048,296.58 = 55,385,108.22 : x
  2. Step 2: Convert to fraction form
    100,037,146.08/138,048,296.58 = 55,385,108.22/x
  3. Step 3: Cross multiply
    100,037,146.08x = 138,048,296.58 × 55,385,108.22
  4. Step 4: Simplify right side
    100,037,146.08x = 7,645,819,845,669,956
  5. Step 5: Solve for x
    x = 7,645,819,845,669,956/100,037,146.08
  6. Step 6: Final answer
    x = 76,429,807.78

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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.