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Finding the Fourth Proportional to 137,354.58, 189,578.61 and 80,798.22

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Solution

The fourth proportional to 137,354.58, 189,578.61 and 80,798.22 is: 111,518.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,354.58 : 189,578.61 = 80,798.22 : x
  2. Step 2: Convert to fraction form
    137,354.58/189,578.61 = 80,798.22/x
  3. Step 3: Cross multiply
    137,354.58x = 189,578.61 × 80,798.22
  4. Step 4: Simplify right side
    137,354.58x = 15,317,614,238.07
  5. Step 5: Solve for x
    x = 15,317,614,238.07/137,354.58
  6. Step 6: Final answer
    x = 111,518.77

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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.