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Finding the Fourth Proportional to 106,391.56, 146,880.32 and 70,630.46

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Solution

The fourth proportional to 106,391.56, 146,880.32 and 70,630.46 is: 97,509.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,391.56 : 146,880.32 = 70,630.46 : x
  2. Step 2: Convert to fraction form
    106,391.56/146,880.32 = 70,630.46/x
  3. Step 3: Cross multiply
    106,391.56x = 146,880.32 × 70,630.46
  4. Step 4: Simplify right side
    106,391.56x = 10,374,224,213.39
  5. Step 5: Solve for x
    x = 10,374,224,213.39/106,391.56
  6. Step 6: Final answer
    x = 97,509.85

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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.