Home / 137,020.99-189,064.78-76,572.31

Finding the Fourth Proportional to 137,020.99, 189,064.78 and 76,572.31

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Solution

The fourth proportional to 137,020.99, 189,064.78 and 76,572.31 is: 105,656.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,020.99 : 189,064.78 = 76,572.31 : x
  2. Step 2: Convert to fraction form
    137,020.99/189,064.78 = 76,572.31/x
  3. Step 3: Cross multiply
    137,020.99x = 189,064.78 × 76,572.31
  4. Step 4: Simplify right side
    137,020.99x = 14,477,126,944.24
  5. Step 5: Solve for x
    x = 14,477,126,944.24/137,020.99
  6. Step 6: Final answer
    x = 105,656.27

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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.