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Finding the Fourth Proportional to 102,915.80, 154,373.52 and 53,010.16

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Solution

The fourth proportional to 102,915.80, 154,373.52 and 53,010.16 is: 79,515.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,915.80 : 154,373.52 = 53,010.16 : x
  2. Step 2: Convert to fraction form
    102,915.80/154,373.52 = 53,010.16/x
  3. Step 3: Cross multiply
    102,915.80x = 154,373.52 × 53,010.16
  4. Step 4: Simplify right side
    102,915.80x = 8,183,365,380.90
  5. Step 5: Solve for x
    x = 8,183,365,380.90/102,915.80
  6. Step 6: Final answer
    x = 79,515.15

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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.