Home / 127,816.40-191,724.60-71,829.20

Finding the Fourth Proportional to 127,816.40, 191,724.60 and 71,829.20

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Solution

The fourth proportional to 127,816.40, 191,724.60 and 71,829.20 is: 107,743.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,816.40 : 191,724.60 = 71,829.20 : x
  2. Step 2: Convert to fraction form
    127,816.40/191,724.60 = 71,829.20/x
  3. Step 3: Cross multiply
    127,816.40x = 191,724.60 × 71,829.20
  4. Step 4: Simplify right side
    127,816.40x = 13,771,424,638.32
  5. Step 5: Solve for x
    x = 13,771,424,638.32/127,816.40
  6. Step 6: Final answer
    x = 107,743.80

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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.