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Finding the Fourth Proportional to 127,019.92, 190,530.21 and 42,839.22

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Solution

The fourth proportional to 127,019.92, 190,530.21 and 42,839.22 is: 64,258.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,019.92 : 190,530.21 = 42,839.22 : x
  2. Step 2: Convert to fraction form
    127,019.92/190,530.21 = 42,839.22/x
  3. Step 3: Cross multiply
    127,019.92x = 190,530.21 × 42,839.22
  4. Step 4: Simplify right side
    127,019.92x = 8,162,165,386.24
  5. Step 5: Solve for x
    x = 8,162,165,386.24/127,019.92
  6. Step 6: Final answer
    x = 64,258.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.