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Finding the Fourth Proportional to 106,778.67, 147,172.61 and 97,728.91

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Solution

The fourth proportional to 106,778.67, 147,172.61 and 97,728.91 is: 134,699.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,778.67 : 147,172.61 = 97,728.91 : x
  2. Step 2: Convert to fraction form
    106,778.67/147,172.61 = 97,728.91/x
  3. Step 3: Cross multiply
    106,778.67x = 147,172.61 × 97,728.91
  4. Step 4: Simplify right side
    106,778.67x = 14,383,017,532.65
  5. Step 5: Solve for x
    x = 14,383,017,532.65/106,778.67
  6. Step 6: Final answer
    x = 134,699.35

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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.