Home / 127,144.64-175,440.12-76,145.42

Finding the Fourth Proportional to 127,144.64, 175,440.12 and 76,145.42

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Solution

The fourth proportional to 127,144.64, 175,440.12 and 76,145.42 is: 105,069.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,144.64 : 175,440.12 = 76,145.42 : x
  2. Step 2: Convert to fraction form
    127,144.64/175,440.12 = 76,145.42/x
  3. Step 3: Cross multiply
    127,144.64x = 175,440.12 × 76,145.42
  4. Step 4: Simplify right side
    127,144.64x = 13,358,961,622.25
  5. Step 5: Solve for x
    x = 13,358,961,622.25/127,144.64
  6. Step 6: Final answer
    x = 105,069.01

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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.