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Finding the Fourth Proportional to 112,201, 154,818.32 and 66,878.16

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Solution

The fourth proportional to 112,201, 154,818.32 and 66,878.16 is: 92,280.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,201 : 154,818.32 = 66,878.16 : x
  2. Step 2: Convert to fraction form
    112,201/154,818.32 = 66,878.16/x
  3. Step 3: Cross multiply
    112,201x = 154,818.32 × 66,878.16
  4. Step 4: Simplify right side
    112,201x = 10,353,964,375.89
  5. Step 5: Solve for x
    x = 10,353,964,375.89/112,201
  6. Step 6: Final answer
    x = 92,280.50

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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.