Home / 100,037,815.20-138,049,218.72-55,385,777.52

Finding the Fourth Proportional to 100,037,815.20, 138,049,218.72 and 55,385,777.52

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Solution

The fourth proportional to 100,037,815.20, 138,049,218.72 and 55,385,777.52 is: 76,430,730.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,037,815.20 : 138,049,218.72 = 55,385,777.52 : x
  2. Step 2: Convert to fraction form
    100,037,815.20/138,049,218.72 = 55,385,777.52/x
  3. Step 3: Cross multiply
    100,037,815.20x = 138,049,218.72 × 55,385,777.52
  4. Step 4: Simplify right side
    100,037,815.20x = 7,645,963,314,835,740
  5. Step 5: Solve for x
    x = 7,645,963,314,835,740/100,037,815.20
  6. Step 6: Final answer
    x = 76,430,730.71

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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.