Home / 127,260.30-190,890.45-121,428.30

Finding the Fourth Proportional to 127,260.30, 190,890.45 and 121,428.30

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Solution

The fourth proportional to 127,260.30, 190,890.45 and 121,428.30 is: 182,142.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,260.30 : 190,890.45 = 121,428.30 : x
  2. Step 2: Convert to fraction form
    127,260.30/190,890.45 = 121,428.30/x
  3. Step 3: Cross multiply
    127,260.30x = 190,890.45 × 121,428.30
  4. Step 4: Simplify right side
    127,260.30x = 23,179,502,829.74
  5. Step 5: Solve for x
    x = 23,179,502,829.74/127,260.30
  6. Step 6: Final answer
    x = 182,142.45

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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.