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Finding the Fourth Proportional to 137,437.82, 189,660.24 and 80,089.82

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Solution

The fourth proportional to 137,437.82, 189,660.24 and 80,089.82 is: 110,521.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,437.82 : 189,660.24 = 80,089.82 : x
  2. Step 2: Convert to fraction form
    137,437.82/189,660.24 = 80,089.82/x
  3. Step 3: Cross multiply
    137,437.82x = 189,660.24 × 80,089.82
  4. Step 4: Simplify right side
    137,437.82x = 15,189,854,482.76
  5. Step 5: Solve for x
    x = 15,189,854,482.76/137,437.82
  6. Step 6: Final answer
    x = 110,521.65

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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.