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Finding the Fourth Proportional to 102,915.72, 154,373.58 and 67,847.16

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Solution

The fourth proportional to 102,915.72, 154,373.58 and 67,847.16 is: 101,770.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,915.72 : 154,373.58 = 67,847.16 : x
  2. Step 2: Convert to fraction form
    102,915.72/154,373.58 = 67,847.16/x
  3. Step 3: Cross multiply
    102,915.72x = 154,373.58 × 67,847.16
  4. Step 4: Simplify right side
    102,915.72x = 10,473,808,982.03
  5. Step 5: Solve for x
    x = 10,473,808,982.03/102,915.72
  6. Step 6: Final answer
    x = 101,770.74

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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.