Home / 137,021.50-189,065.47-76,572.82

Finding the Fourth Proportional to 137,021.50, 189,065.47 and 76,572.82

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Solution

The fourth proportional to 137,021.50, 189,065.47 and 76,572.82 is: 105,656.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,021.50 : 189,065.47 = 76,572.82 : x
  2. Step 2: Convert to fraction form
    137,021.50/189,065.47 = 76,572.82/x
  3. Step 3: Cross multiply
    137,021.50x = 189,065.47 × 76,572.82
  4. Step 4: Simplify right side
    137,021.50x = 14,477,276,202.53
  5. Step 5: Solve for x
    x = 14,477,276,202.53/137,021.50
  6. Step 6: Final answer
    x = 105,656.97

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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.