Home / 137,009.04-189,047.88-76,580.88

Finding the Fourth Proportional to 137,009.04, 189,047.88 and 76,580.88

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Solution

The fourth proportional to 137,009.04, 189,047.88 and 76,580.88 is: 105,667.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,009.04 : 189,047.88 = 76,580.88 : x
  2. Step 2: Convert to fraction form
    137,009.04/189,047.88 = 76,580.88/x
  3. Step 3: Cross multiply
    137,009.04x = 189,047.88 × 76,580.88
  4. Step 4: Simplify right side
    137,009.04x = 14,477,453,012.53
  5. Step 5: Solve for x
    x = 14,477,453,012.53/137,009.04
  6. Step 6: Final answer
    x = 105,667.87

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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.