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Finding the Fourth Proportional to 127,188.98, 175,420.64 and 112,668.69

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Solution

The fourth proportional to 127,188.98, 175,420.64 and 112,668.69 is: 155,394.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,188.98 : 175,420.64 = 112,668.69 : x
  2. Step 2: Convert to fraction form
    127,188.98/175,420.64 = 112,668.69/x
  3. Step 3: Cross multiply
    127,188.98x = 175,420.64 × 112,668.69
  4. Step 4: Simplify right side
    127,188.98x = 19,764,413,582.97
  5. Step 5: Solve for x
    x = 19,764,413,582.97/127,188.98
  6. Step 6: Final answer
    x = 155,394.08

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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.