Home / 102,790,629.60-141,882,832.35-66,121,200.60

Finding the Fourth Proportional to 102,790,629.60, 141,882,832.35 and 66,121,200.60

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Solution

The fourth proportional to 102,790,629.60, 141,882,832.35 and 66,121,200.60 is: 91,267,689.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,790,629.60 : 141,882,832.35 = 66,121,200.60 : x
  2. Step 2: Convert to fraction form
    102,790,629.60/141,882,832.35 = 66,121,200.60/x
  3. Step 3: Cross multiply
    102,790,629.60x = 141,882,832.35 × 66,121,200.60
  4. Step 4: Simplify right side
    102,790,629.60x = 9,381,463,219,510,520
  5. Step 5: Solve for x
    x = 9,381,463,219,510,520/102,790,629.60
  6. Step 6: Final answer
    x = 91,267,689.05

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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.