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Finding the Fourth Proportional to 127,730.66, 176,271.48 and 71,142.98

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Solution

The fourth proportional to 127,730.66, 176,271.48 and 71,142.98 is: 98,179.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,730.66 : 176,271.48 = 71,142.98 : x
  2. Step 2: Convert to fraction form
    127,730.66/176,271.48 = 71,142.98/x
  3. Step 3: Cross multiply
    127,730.66x = 176,271.48 × 71,142.98
  4. Step 4: Simplify right side
    127,730.66x = 12,540,477,494.85
  5. Step 5: Solve for x
    x = 12,540,477,494.85/127,730.66
  6. Step 6: Final answer
    x = 98,179.07

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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.