Home / 107,271,939.20-147,932,361.60-72,069,278.72

Finding the Fourth Proportional to 107,271,939.20, 147,932,361.60 and 72,069,278.72

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Solution

The fourth proportional to 107,271,939.20, 147,932,361.60 and 72,069,278.72 is: 99,386,462.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,271,939.20 : 147,932,361.60 = 72,069,278.72 : x
  2. Step 2: Convert to fraction form
    107,271,939.20/147,932,361.60 = 72,069,278.72/x
  3. Step 3: Cross multiply
    107,271,939.20x = 147,932,361.60 × 72,069,278.72
  4. Step 4: Simplify right side
    107,271,939.20x = 10,661,378,599,858,224
  5. Step 5: Solve for x
    x = 10,661,378,599,858,224/107,271,939.20
  6. Step 6: Final answer
    x = 99,386,462.85

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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.