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Finding the Fourth Proportional to 112,114.64, 168,058.56 and 72,696.80

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Solution

The fourth proportional to 112,114.64, 168,058.56 and 72,696.80 is: 108,971.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,114.64 : 168,058.56 = 72,696.80 : x
  2. Step 2: Convert to fraction form
    112,114.64/168,058.56 = 72,696.80/x
  3. Step 3: Cross multiply
    112,114.64x = 168,058.56 × 72,696.80
  4. Step 4: Simplify right side
    112,114.64x = 12,217,319,524.61
  5. Step 5: Solve for x
    x = 12,217,319,524.61/112,114.64
  6. Step 6: Final answer
    x = 108,971.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.