Home / 127,173.60-175,474.08-81,780.48

Finding the Fourth Proportional to 127,173.60, 175,474.08 and 81,780.48

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Solution

The fourth proportional to 127,173.60, 175,474.08 and 81,780.48 is: 112,840.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,173.60 : 175,474.08 = 81,780.48 : x
  2. Step 2: Convert to fraction form
    127,173.60/175,474.08 = 81,780.48/x
  3. Step 3: Cross multiply
    127,173.60x = 175,474.08 × 81,780.48
  4. Step 4: Simplify right side
    127,173.60x = 14,350,354,489.96
  5. Step 5: Solve for x
    x = 14,350,354,489.96/127,173.60
  6. Step 6: Final answer
    x = 112,840.67

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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.