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Finding the Fourth Proportional to 127,489.34, 175,944.86 and 76,504.30

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Solution

The fourth proportional to 127,489.34, 175,944.86 and 76,504.30 is: 105,581.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,489.34 : 175,944.86 = 76,504.30 : x
  2. Step 2: Convert to fraction form
    127,489.34/175,944.86 = 76,504.30/x
  3. Step 3: Cross multiply
    127,489.34x = 175,944.86 × 76,504.30
  4. Step 4: Simplify right side
    127,489.34x = 13,460,537,817.41
  5. Step 5: Solve for x
    x = 13,460,537,817.41/127,489.34
  6. Step 6: Final answer
    x = 105,581.67

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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.