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Finding the Fourth Proportional to 127,988.44, 176,628.90 and 71,410.84

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Solution

The fourth proportional to 127,988.44, 176,628.90 and 71,410.84 is: 98,549.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,988.44 : 176,628.90 = 71,410.84 : x
  2. Step 2: Convert to fraction form
    127,988.44/176,628.90 = 71,410.84/x
  3. Step 3: Cross multiply
    127,988.44x = 176,628.90 × 71,410.84
  4. Step 4: Simplify right side
    127,988.44x = 12,613,218,117.28
  5. Step 5: Solve for x
    x = 12,613,218,117.28/127,988.44
  6. Step 6: Final answer
    x = 98,549.67

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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.