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Finding the Fourth Proportional to 127,718.80, 176,245 and 70,346.94

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Solution

The fourth proportional to 127,718.80, 176,245 and 70,346.94 is: 97,074.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,718.80 : 176,245 = 70,346.94 : x
  2. Step 2: Convert to fraction form
    127,718.80/176,245 = 70,346.94/x
  3. Step 3: Cross multiply
    127,718.80x = 176,245 × 70,346.94
  4. Step 4: Simplify right side
    127,718.80x = 12,398,296,440.30
  5. Step 5: Solve for x
    x = 12,398,296,440.30/127,718.80
  6. Step 6: Final answer
    x = 97,074.95

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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.