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Finding the Fourth Proportional to 172,989.12, 238,724.88 and 93,501.12

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Solution

The fourth proportional to 172,989.12, 238,724.88 and 93,501.12 is: 129,031.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,989.12 : 238,724.88 = 93,501.12 : x
  2. Step 2: Convert to fraction form
    172,989.12/238,724.88 = 93,501.12/x
  3. Step 3: Cross multiply
    172,989.12x = 238,724.88 × 93,501.12
  4. Step 4: Simplify right side
    172,989.12x = 22,321,043,651.87
  5. Step 5: Solve for x
    x = 22,321,043,651.87/172,989.12
  6. Step 6: Final answer
    x = 129,031.49

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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.